QoQ shares a TSQL (MS SQL Server) function in which it is not simple %and _is wildcard in LIKE - it also supports regex-style character classes, as in [a-z]any lowercase letter.
, , .. [[] [, , , , , % _ - :
'%#Url.SearchString.replaceAll('[\[%_]','[$0]')#%'
( String.replaceAll), [ % _ [.. ] - $0 .