1. Use professional databases, such as Westlaw, LexisNexis, HeinOnline, etc. These databases contain a large number of legal documents, including cases, legal provisions, academic papers and so on.
2. Use academic search engines: such as Google Academic, Scopus, webofscience, etc. These search engines can search all kinds of academic resources, including journal articles, conference papers, dissertations and so on.
3. Develop retrieval strategy: when searching, you can use keywords, subject words, author's name, publication year and other information to search. At the same time, logical operatORs (such as AND, or, NOT) can be used to combine search terms to narrow or expand the search scope.
4. Filtering documents: after a large number of documents are retrieved, filtering is needed. First of all, we can judge whether it is related to the research topic by reading the titles and abstracts of the literature; Secondly, we can judge the influence of literature by looking at the number of citations and the number of citations; Finally, we can judge the reliability of the literature by looking at the published publications and the author's background.
5. Use document management tools, such as EndNote and Zotero, which can help you manage and organize documents for subsequent reading and reference.
6. Participate in academic activities: such as academic conferences and seminars. These activities can let you know the latest research trends and provide a good opportunity to obtain high-quality literature.
7. Seek professional help: If you have difficulty in searching and screening documents, you can seek the help of librarians or teachers. They are experienced and can provide effective advice.