Hi Raymond,
Ok, I will need to check your index files. Could you please navigate to your index folder, e.g. Default index for corporate site is stored in:
\App_Data\CMSModules\SmartSearch\CorporateSite.Default, compress your index folder (zip) and upload it via the following page:
ulozto.net/upload after that please send me the link, so I can test your index search functionality.
Best regards,
Martin Danko