Hello again.
Thank you for helping.
I am going to download the tool you suggested, but i should also mention that I found another solution.
i searched if someone asked about the solution to the same problem and i found this http://www.bleepingcomputer.com/forums/t/487215/default-tab-search-results-llc/
I thought it would take too much time to post my logs there so i continued searching and came across those manual removal instructions http://www.americanpendulum.com/2013/03/21/remove-default-tab-search-results-llc/
I removed everything suspicious from my browser and i search for a file with that name, but did not find any. Anyway, I read that the manual removal i certainly not going to do much, so i also downloaded Malwarebytes.
After the second scan there were no threads found, so i guess it was successfully removed.
Just to be sure i will scan my computer with ADWCleaner.