Can't find my gig by searching with the main title

[graphics_xpert8]

Hi, I am a level one seller . Basically i works for youtube thumbnails design.
I have completed more than 30 order during this month. My gig was atz the first page . But suddenly i can’t find my gig by searching with the same title. Even don’t find my gig to the other pages .
Just i can show my gig when i filter the search option to Online sellers. Then i just find my gig otherwise not.
How can i get the solution ?