How to filter out Russian Spam


I’d like to create a junk keyword filter to filter out Russian Text
such as “Профессиональные” and other Russian words like the backwards “N” but the filter won’t allow me to enter anything other than text, American punctuation symbols and numbers.

How do I do this?


Please let me know if you ever figure out how to do this. My wife gets tons of Russian spam and it drives her crazy. Thanks.