Why is there big difference bettwen google webmaster and real search resualt

The search resualt of one my keyword “lithium niobate” is not listed in the top 100 resualt of google search. But the google webmaster told me it listed in the 6-10 position.

Why google miss calculate their own search resualt?

Hello everyone!

Hello world!

This is my new home on internet. Thanks for wordpress, thanks for god. There will be a lot of things every day. The most important one is to ensure we are stil here tomorrow.

2012 coming soon? I do not know. Enjoy today at first!

Finally, it is hard to find how to save my input.