200,000+ searches? Where are you getting those numbers?
Even “online sex” only has 41,000 searches. “sex sex online” will have 0 searches.
http://inventory.overture.com/d/searchinventory/suggestion/
You can’t say that the combination will have the same searches of adding them.
3021038 car
126050 candy
carcandy.com won’t have 3021038 + 126050 searches.
What program are you using to give you those results. The official tool from Overture doesn’t give that…