i investigated link and demos and i found what you need
(function($){
$.fn.columnFilters = function(settings) {
var defaults = {
wildCard: "",
notCharacter: "!",
caseSensitive: false,
minSearchCharacters: 1,
excludeColumns: [],
alternateRowClassNames: [],
underline: true,
};
set wildCard: "", its default is wildCard:"*", remove * it will work like contains