Site Search Keyword seems to be random and not indicitive

Hi guys

Looking for some direction here - I am looking at Site Search Keywords reports, however the values showing are not indicitive at all of what our users would search for. This is a .Net application, which may or not not be a problem.

For example - a search is executed here: http://slapinc.com/Home/PublicSearch?PageNo=1&SearchText=a

However Piwik shows what seem to be randomized values. Such as “Q2F0ZWdvcnlJZD04MQ==”

What should I be doing to ensure the proper values are passed and I can have an accurate SITE SEARCH KEYWORDS report that is indicative of the values entered by user?

Thanks!
Salvo

See this image: