It depends a lot on area, for instance if there is anything
other than bloody Romanians. One way to approach it is keep several different saved searches. I keep several AW saved searches with different filters, for instance on age and distance from where I stay, both excluding Romanians. Then start with my best saved search and work down. Saves a lot of time. You can also save a search that includes Romanians if all else fails.
The vast majority of Romanians are a blot on the industry, so only to be considered
in extremis. Also, the filters, or any system to exclude them, is not completely foolproof as some will manage to register themselves as a nationality other than Romanian. UKP is the best guide (though reviews by fluffies of Romanians have to be ignored). The culture of prostitution in Romania, not just gypos, would appear to be radically different; and service, pimped or not, tends to be shit. There are rare exceptions, but fluffies starting off that their favoured Romanian prossie “is a rare exception” tend to be completely full of shit.
To the OP, also this:
when you have time review those bad Romanians that you had no luck with. that would be greatly appreciated to confirm they are to be avoided.
Everybody gets a chance: but you are expected to contribute! Read the UKP wiki guides. Don’t start a thread because you think “it is interesting”: get some reviews under your belt before doing that. Like I said, everyone gets one chance; but we’re not here to hold your fucking hand.