Perhaps you should try some spelling variations:
"oxford handbooks online / oxford handbooks online" » "oxford handbook online / oxford handbook online", "word handbooks online / word handbooks online", "oxford guidebooks online / oxford guidebooks online", "oxford handouts online / oxford handouts online", "oxford sandboxes online / oxford sandboxes online", "oxford handbuch online / oxford handbuch online"
oxford redbooks » oxford guidebooks
"Oxford redbooks online / Oxford redbooks online" » "Oxford netbook online / Oxford netbook online"
oxford books » oxford brooks, oxford book, oxford brookes

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 handbooks online / oxford handbooks online") OR ((("Oxford redbooks online / Oxford redbooks online") OR ("Oxford books online / Oxford books online")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"oxford handbooks online / oxford handbooks online\") or (((\"Oxford redbooks online / Oxford redbooks online\") OR (\"Oxford books online / Oxford books online\"))))".
• Removing quotes may allow a broader search: (( oxford handbooks online / oxford handbooks online ) or ((( Oxford redbooks online / Oxford redbooks online ) OR ( Oxford books online / Oxford books online )))).
• Adding a wildcard symbol may retrieve word variants: (("oxford handbooks online / oxford handbooks online") or ((("Oxford redbooks online / Oxford redbooks online") OR ("Oxford books online / Oxford books online"))))*.