You can use on-site search parameters to collect data on your on-site search tool.
Identifies a word or a phrase that visitors submit for an on-site search.
|Valid Value:||Alphanumeric string|
WT . oss = Search Phrase
Identifies whether or not an on-site search is successful. This parameter should be specified on the same hit as WT.oss and should be set to the number of results whenever the on-site search is successful, or to 0 when the search fails (no result).
WT . oss_r = number of results