First, if you know the titles of foreign documents, you can directly Google academic search and some documents can be downloaded directly. If Google Academic can't download it, and you don't have database resource rights to include this document, you can use the following two methods:

DOI 1 and sci-hub paste documents to search and download documents, but this website is unstable and the resources are incomplete, especially the documents from 2022 and later.

2. Document Downloader (wxdown.org), a document downloading website, is an integrated library of document resources, covering a large number of document database resources, such as SpringerLink, Elsevier(sciencedirect), Wiley, Web of Science, PubMed, EI, ProQuest (foreign dissertations) and so on. You can download the required documents from the database containing documents.

Second, if you haven't found the literature you need, you can use the Science Web to search it. This database is an important database for obtaining global academic information, among which SCIE, SSCI, A & amp； Citation index databases such as HCI, JCR journal citation reports and ESI essential science indicators are well-known in the scientific and educational circles all over the world.

The most effective way to download foreign literature is to search and download it from the database containing the literature. Commonly used literature databases are:

Sciencedirect: a world-renowned academic periodical publisher in the Netherlands, which publishes a large number of academic books and periodicals every year, most of which are included by SCI, SSCI and EI, and is internationally recognized as a high-grade academic periodical. ScienceDirect is the full-text database platform of Elsevier Company, and it is the world's largest full-text electronic resource library of science and technology medicine, providing full-text contents of more than 2,500 academic journals and more than 37,000 books. Including CELL Cell magazine, THE LANCET The Lancet magazine and so on.

Wiley: As one of the largest and most comprehensive online multidisciplinary resource platforms for peer-reviewed scientific, technical, medical and academic research in the world, Wiley Online Library is a full-text database of all disciplines, and its publications cover a wide range of disciplines-including chemistry, physics, engineering, agronomy, veterinary medicine, food science, medicine, nursing, stomatology, life science, psychology, business, economics and social science.

SpringerLink: It is the world's largest online academic resource platform in the fields of science, technology and medicine (STM). Springer e-book database includes various springer book products, such as monographs, textbooks, manuals, atlases, reference books and series.

ProQuest: Full-text database of dissertations, which is constructed by PQDD abstract database of ProQuest Company (now named PQDT), is suitable for scientific research and teaching of researchers in China, and provides full-text services for readers of more than 0/00 scientific research and teaching units in China. It is the most comprehensive, high-quality and unique database in China that can comprehensively query the full text of foreign dissertations.

PubMed: This is a free search engine that provides a database of biomedical papers and abstracts. Its database source is MEDLINE. Its core theme is medicine, but it also includes other fields related to medicine, such as nursing or other health disciplines. PubMed information does not include the full text of journal articles, but it can provide links to full-text providers (paid or free).