I have notice that the OSclass search is not giving results with 3 and less letters. So it is not possible to find by words like: BMW, i6, LG, s7 etc.

In accordance with this http://forums.osclass.org/development/improving-search/ the reason are MySQL settings.

I have shared hosting, is there any solution (except swap to VPS) to get rid of this serious obstacle ?

 

@user77
No idea, your database needs to support searching with less then 3 letters, you should contact your hosting provider on this.