er...help?

Hi, I don't who to ask this, its marketing related tho so maybe I can rightfully ask it here...I just went to the google adwords/keyword tool to research keywords with a view to making good trafficked ones into domain names.

The word/s I'm checking are dictionary correct, proper english and widely used. Trouble is the keyword tool keeps saying there is zero listings for that keyword. That is so unlikely that its impossible, so I put the word into a google internet seach and get 2 million listings/hits for it. If I out the same word into the google keyword tool it comes as zero. Huh?

I do need the information so I can't walk away.

Is there anyone I can complain to? The word/s are sexual in nature and depending on the point of view can be a highly charged topic, reference how emotionally charged the subject of abortion is.
Do I tell google someone is up to no good within their organization, or do I assume this is google policy and then what the heck does one do?

If it turns out these word/s are being censored/controlled it will make some decent waves in the medical circles I work with.

Thanks for any input, I realize I've not revealed the word/s, reference the charged nature of abortion, everyone has an opinion about those words. I really want to go beyond the issues of the word and solve the apparent censorship issue.
regards Roger