Add the following to your own OpenSim.ini file to make Search work:

[Search]
; This is the URL needed for Search server to work  
; Change it to your own HTTP server to have Search inworld working
    ;SearchURL = XOOPS_URL/modules/xoopensim/helper/query.php

;In addition to the above, the following two lines need to be added to the
;[Modules] section of the OpenSim.ini file.
    LandServices = "RemoteLandServicesConnector"
    LandServiceInConnector = "true"