1. China Academic Journals Online Publishing Database: This database contains all kinds of academic documents at home and abroad, including master's and doctoral theses.

2. Wanfang Data Knowledge Service Platform: This platform contains a large number of dissertations at home and abroad, which can be searched by keywords, authors and topics.

3. China HowNet: This website is a well-known academic literature resource base in China, which contains a large number of doctoral dissertations.

4.ProQuest dissertations and. Global dissertations database: This database is the largest dissertations database in the world, which contains more than 90% dissertations from all over the world.

5.DART- European electronic paper portal: This website is a European academic paper library, which contains papers from many European countries.

6. Open access to theses and dissertations: This website is a free dissertations library, which contains dissertations from more than 65,438+0,000 institutions around the world.

7.Google Academic Search: This search engine can search global academic literature, including a large number of dissertations.