Generally speaking, patent databases provide three search modes, simple search, table search and advanced search. Simple search is similar to intelligent search, which is automatically classified by keywords and has relatively high requirements for keywords; table search can fill in relevant keywords based on different information; advanced search requires writing search terms. Everyone's search habits are different, so I can't say which one is better. As far as search results are concerned, this has a lot to do with the search experience of the search personnel. It is recommended that you use a form search so that you can get better search results by filling in accurate keywords based on the information you know. Search methods: keyword search, ipc classification number search, etc.