Perhaps you should try some spelling variations:
oxford handbooks » oxford handbook, word handbooks, adwords handbooks
"oxford handouts online / oxford handouts online" » "oxford handbuch online / oxford handbuch online"
"oxford brookes online / oxford brookes online" » "oxford books online / oxford books online", "oxford bodies online / oxford bodies online", "oxford routes online / oxford routes online"
"lord brookes online / lord brookes online" » "lord books online / lord books online", "lord bodies online / lord bodies online", "lord routes online / lord routes online", "lord brooke online / lord brooke online", "lord brook online / lord brook online", "r brookes online / r brookes online"

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