Knowing HOW to use the internet helps.
Two words enclosed in seperate quotes often gets you pretty much in the ballpark
eg. "uno" "troubleshooting" site:https://forum.arduino.cc.
That should for all intents put most of the results for UNO and in most cases seperate the troubleshooting section from a lot of the crud..
Add a year or month or user name and get even closer if you want.
Bob.