First, basic search
1. Search for documents according to the document name to be queried: document name, book name, etc.
2. Search this document: author, editor, etc. If there is a translator, you can also search for "translator";
3. The serial number of the document, and if there is a patent, you can also search the patent number;
4. A broader search can also search for publication date, literature type, etc.
Second, the content feature search method
1. Search literature classification: you can query according to the categories of literature you need;
2. Literature subject search: according to the main contents, titles and keywords of the literature;