How to delete searchid cache?

[محروم.كوم]

Hello! As a vbulletin caches searchid results for 1 hour how can I clear that cache when I want?
I faced with a problem. After editing a thread and remove a searching word, search engine doesn't see that because of search cache and still give the thread in a search results. How can I set a time for search cache manually and have an ability to clear the cache whenever I want? __DEFINE_LIKE_SHARE__