Perhaps you should try some spelling variations:
"online hand research documents" » "online hand search document", "online hand research arguments", "online hand research comments", "online land research documents", "online sand research documents", "online brand research documents", "online band research documents", "online handel research documents"
"online rand research students" » "online rand research studies", "online rand research instruments", "online rand research study", "online brand research students", "online range research students", "online card research students", "online band research students", "online random research students"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("online hand research documents") OR ("online rand research students")).
• Removing quotes may allow a broader search: (( online hand research documents ) or ( online rand research students )).
• Adding a wildcard symbol may retrieve word variants: (("online hand research documents") or ("online rand research students"))*.