Here's a thread with the same question. Hope it helps you out.

http://www.warriorforum.com/adsense-...word-tool.html

What word? Can you give it to me, i want to see this myself, something strange is going on.

This means, we can't get accurate results from any of these keyword researching tools?.

I think google adwords that right,,,
because, google that have all date about search and king of search engine

Semrush takes data from Google, how it can show inaccurately? The only thing that may be - their database may not have been updated, they are updated once a month. But still this difference can not be.