Greasy Fork is available in English.
To search scripts using Google Search
< Feedback em GreasyFork Search
Currently there are only two features. Just type and search in the main page https://greasyfork.org/en
g YouTube
It will use Google to search the scripts with "YouTube" in Greasy Fork.
youtube.com tamer
It will use Greasy Fork to search the scripts with "tamer" in Greasy Fork with site(domain) "youtube.com"
Thank you.
Please include some screenshots of how to use this script.