Advanced search supports the combination of multiple search terms within the same search item using operators *, +, -, '', "", and (). The content entered in the search box should not exceed 120 characters.

When entering operators *, +, -, (), there should be a space before and after them, and the priority needs to be determined by English half-width parentheses.

If the search terms contain spaces or special characters such as *, +, -, (), /, %, =, etc., when performing multiple term combinations, to avoid ambiguity, the search terms should be enclosed in English single quotation marks or English double quotation marks.

(1) Entering Neural networks * natural language in the “title” search item: literature which titles include both "neural networks" and "natural language" can be searched.

(2) Entering (forging + free forging) * crack in the “subject” search item, literature which subjects contain either "forging" or "free forging", and related to "crack" can be searched.

(3) Entering “digital library' * 'information service' after the title search item, literature with titles that include "digital library" and "information service" can be found.

(4)Entering '2+3' * talent cultivation after the title search item, iterature with titles that include "2+3" and "talent cultivation" can be found.

The relevant recommendations are as follows. After being selected, it can be viewed in the search conditions.