Whole-word search

**Is your feature request related to a problem? Please describe.**
I am looking for a git client or a GitHub client. Searching for `git` matches a lot of unrelated apps, as the descriptions link the upstream GitHub repos and therefore literally contain `git`.

Another short string that gives the same issue is `man`, to search viewers for the Linux man pages, as it matches file manager, app manager, password manager.

Using a combination of related keywords at f-droid.org's web frontend, I found *at least* one git client [1](https://f-droid.org/en/packages/com.manichord.mgit/), five GitHub clients [1](https://f-droid.org/en/packages/com.gh4a/) [2](https://f-droid.org/en/packages/com.github.mobile) [3](https://f-droid.org/en/packages/com.thirtydegreesray.openhub) [4](https://f-droid.org/en/packages/com.fastaccess.github.libre) [5](https://f-droid.org/en/packages/jp.forkhub), one installer for git server [1](https://f-droid.org/en/packages/pro.kherel.selfprivacy/), three man page viewers [1](https://f-droid.org/en/packages/wtf.technodisaster.tldr/) [2](https://f-droid.org/en/packages/com.adonai.manman/) [3](https://f-droid.org/en/packages/com.inspiredandroid.linuxcommandbibliotheca/).

**Describe the solution you'd like**
Ability to search for a whole word, i.e. search does not cross a word boundary, as opposed to full-text search.