General steps for literature retrieval: 1. Analyze the problem and clarify the literature needs; 2. Select literature retrieval tools; 3. Determine the search approach and search terms; 4. Adjust the search strategy; 5. Based on the literature clues, Get the full text.

Before conducting a literature search, we must first clarify the field of our thesis topic, such as law, industry and technology, basic science, medicine and health, agricultural science, education, literature and art, economics and finance, social science, philosophy and politics, etc. wait.

Choose a literature search tool:

There are many literature search tools, and there are literature materials for different purposes under different categories. Below I will introduce the main types of literature and their representative ones. Search tool.

Books and periodicals: CNKI, VIP, Wanfang, EBSCO, Springer LINK and other journal databases.

Patents: Wanfang, China State Intellectual Property Office, European Patent Office database, United States Patent and Trademark Office database.

Standard documents: Wanfang, China Standards Service Network, ISO, IEC websites.

Science and Technology Report: China Science and Technology Achievements Database, National Science and Technology Library and Documentation Center, U.S. Government Research Center, etc.

Conference papers: CNKI, Wanfang, National Science and Technology Library and Documentation Center, ISTP, China Conference Network, etc.

Database dissertations: CNKI, Wanfang, National Science and Technology Library and Documentation Center, PQDT and other dissertations.