1. Single-database search: enter the database platform, search the online publishing database of China journals, dissertations, patents, etc. 16 kinds of academic resources at one time-select the subject field-enter the search control conditions-enter the content search conditions, and click "Search" to get the search results.

2. Cross-database retrieval: It means that readers can select the resources of multiple databases for retrieval, and can complete the unified cross-database retrieval of periodicals, dissertations, newspapers, conference papers and other databases under the same retrieval interface.

Cross-database retrieval has three interfaces: primary retrieval, advanced retrieval and professional retrieval. Users can choose one of them according to the retrieval conditions and technical level to build a one-stop service platform.

3. Advanced Search: Click the "Advanced Search" button to enter the advanced search interface. Providing logical relationship control between retrieval items, such as "Book Title = Library Science" and/or "Author = Wu Weici", will retrieve information about library science.

The author is (not) an article by Wu Weici. If we want to improve the accuracy, we can add multiple logical relationships and carry out various retrieval controls, such as relevance ranking, time control, word frequency control, accurate/fuzzy matching and so on. , suitable for people who have a certain understanding of retrieval methods.