Can’t search Japanese Strings

When in backend for translating, I find really difficult to make search in Japanese languages.

Strings are found only if in the search box I put the beginning of the japanese string, If I look for a central part, or the ending of the string, it does not find anything.

For example, I have this string

利用可能な期間

If I search for the whole string it is found, if I search for the beginning (like 利用可) it works, but if I do not include the beginning (searching for the end or a central part) it does not find anything.

Here’s some screenshots

1. full string search (ok) https://prnt.sc/dGOY-tmWp–Y
2. search of the beginning of the string (ok) https://prnt.sc/EgrqvTf-1M7P
3. search for a middle part or ending (not working) https://prnt.sc/mjTYkgT8Arm5

Naturally this is an issue when I have long strings to find.

I’m sure this is due to the nature of the Japanese characters, is it fixable?