Products are not findable in backend

What is the title of the product and the search term you’re using exactly?

the terms used for example are
Artur 6910052-333
6810052-433

which are also the names of the products

Does not seem to be an issue for me: https://dl.dropboxusercontent.com/s/drqr7tcs3jay3r0/2016-02-12%20at%2010.56.png?dl=0 Check for plugin conflicts.

I′ll check, thanks in advance. If i still encounter problems i′ll come back to that! Thank you