var filters = [];
filters.push(new nlobjSearchFilter('item', null, 'anyof', item));
filters.push(new nlobjSearchFilter('location', null, 'noneof', '@NONE@'));
var columns = [];
columns.push(new nlobjSearchColumn('internalid'));
columns.push(new nlobjSearchColumn('trandate').setSort());
columns.push(new nlobjSearchColumn('location'));
var search = nlapiSearchRecord('workorder', '', filters, columns);