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

[DataSnapshot]
    index_sims = true
    ;data_exposure = all
    data_exposure = minimum
    gridname = "Grid Name"
    default_snapshot_period = 1200
    snapshot_cache_directory = "DataSnapshot"
    data_services = "MOODLE_URL/blocks/modlos/helper/register.php"
    ;data_services = "XOOPS_URL/modules/xoopensim/helper/register.php"

[Modules]
    LandServices = "RemoteLandServicesConnector"
    LandServiceConnector = "True"

[Search]
    SearchModule = "OpenSimSearchModule"

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