I don't think filtering out is possible.
It sucks. I just did a search for "possessive lover"... 499 pages.. mostly yaoi. （/TДT)/
well mangago is like fujoshi dominant manga site. you might want to go read at any other manga site like mangafox, etc. you can even filter out yaoi there. i hope mgg put that option up tho.
Well I'll say it's better to use some other website if you can to search cuz mangago is pretty much filled with yaoi as you saw.
In tags its not possible, but in genres you can filter yaoi out
Use this page ( http://www.mangago.me/list/directory/all/1/ ) and click on the categories you want - or search using shoujo/josei + older man - should work
There's more manga here that mangafox doesn't have... that aren't Yaoi.
Dude using a different site would be easier but if you're not interested in something, just ignore it.
Yes, because it's easy to ignore it when you're trying to dig through over 100 pages of manga, and every page is yaoi.
I want to filter out yaoi when I search tags. It's literally clogging everything. I searched Older Man X Younger Girl..... and even THERE was yaoi. It's just not my thing.