Perhaps you should try some spelling variations:
"oxford guidebooks online / oxford guidebooks online" » "oxford quickbooks online / oxford quickbooks online", "oxford guides online / oxford guides online", "oxford guidelines online / oxford guidelines online"
"oxford handbook define / oxford handbook define" » "oxford handbook devices / oxford handbook devices", "oxford handbook design / oxford handbook design", "oxford handbook ein / oxford handbook ein"

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: (("oxford guidebooks online / oxford guidebooks online") OR ("oxford handbook define / oxford handbook define")).
• Removing quotes may allow a broader search: (( oxford guidebooks online / oxford guidebooks online ) or ( oxford handbook define / oxford handbook define )).
• Adding a wildcard symbol may retrieve word variants: (("oxford guidebooks online / oxford guidebooks online") or ("oxford handbook define / oxford handbook define"))*.