If the search’s Chinese keywords are also in the title, then the search results of the text will also come out. If the title does not have this keyword, nothing will be searched. BTW: English keywords do not have this problem.
When you enter Chinese, the second line is incomplete. You need to manually type a line and enter it to display it completely.
I am sorry that my English is not very good, so I can only use Google Translate to post.
（After my further tests, some of the keywords in the text can be searched, and some can’t. I……）