search filter with percentage symbol

I am not a geek,
I use mysql simple database with one tabe
and /! DataTables 1.10.4
and i tested with
/ jQuery JavaScript Library v3.3.1
or
/*! jQuery v1.11.1

I have the same issue

I don't understand why i can't write da ba to search in column 1 = dany marcus + column 2 = backer
I can only search on one column by ny or ny%ma

My searching is only possible on one column.... and i need to add % beetwen string

Thanks for your help