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 redbooks online / oxford redbooks online", "oxford sandboxes online / oxford sandboxes online"
"oxford brookes online / oxford brookes online" » "lord brookes online / lord brookes online", "oxford bodies online / oxford bodies online", "oxford routes online / oxford routes online", "oxford browser online / oxford browser online"
"oxford indexes online / oxford indexes online" » "oxford annexed online / oxford annexed online"
"oxford books online / oxford books online" » "oxford brooks online / oxford brooks online", "oxford book online / oxford book online", "oxford binns online / oxford binns online"

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 books online / oxford books online") OR ("oxford brookes online / oxford brookes online"))))) OR ("oxford indexes online / oxford indexes online"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"oxford handbooks online / oxford handbooks online\") or (((\"oxford books online / oxford books online\") OR (\"oxford brookes online / oxford brookes online\"))))) or (\"oxford indexes online / oxford indexes online\"))*".
• Removing quotes may allow a broader search: (((( oxford handbooks online / oxford handbooks online ) or ((( oxford books online / oxford books online ) OR ( oxford brookes online / oxford brookes online ))))) or ( oxford indexes online / oxford indexes online ))*.