Suggest improved flexible search capabilities

Is your feature request related to a problem?

I'm always frustrated when search using keyword.
if you search for keywords other than search file name sequence flows, you cannot find the file.

EX. file name to search: 20201113 issue test image

You can find a file by creating a search keyword with search file name sequence flow.

-> search success keyword: "20201113", "issue test", "image", etc

However, if you search for keywords other than search file name sequence flows, you cannot find the file.

-> search fail keyword: "20201113 test", "issue image", "te ", etc

Describe the solution you'd like

I think search is one of the most important features in this app.
It would be better to use your search more flexibly.
I hope I can find the file even if I search for keywords other than search file name order flow.

Instead of spaces, we suggest using the '%' symbol to make it searchable.

When a user searches in an APP, it is suggested that the search string should be changed to the '%' symbol before sending it to the server.

Result after code modification:

If you are positive about this solution, I would like to PR it, so please give me your opinion.

Reproduce the successful and failing filename searches described in the issue, including the proposed '%' behavior, before locating the server-side search entry point. Confirm the intended matching semantics with maintainers, then verify that the documented keyword-order examples return the expected file without breaking existing searches.