Search only searches some documents

I'm starting to use Zoho docs. I uploaded a couple MS Word files. When I use the search box in Zoho to search on words I know are in the documents, zoho only returns some of the documents that have a match, not all. I only have 6 documents uploaded and I'm doing testing. If I create a document in zoho, search finds it. If I go to a document that zoho doesn't find, and edit it in zoho docs and save it, zoho still doesn't pull up the document when I do a search.

--Scott