Perhaps you should try some spelling variations:
"perils mines workbook" » "perils makers workbook", "perils markets workbook", "perils chinese workbook", "perils lines workbook", "perils eines workbook", "perils nines workbook"
"periplus mine cookbooks" » "periplus line cookbooks", "periplus eine cookbooks", "periplus nine cookbooks"
"periplus mine workbooks" » "periplus line workbooks", "periplus eine workbooks", "periplus nine workbooks"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("periplus mine cookbooks") OR ("periplus mine workbooks"))) or ("perils mines workbook"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("periplus mine cookbooks") OR ("periplus mine workbooks"))) OR ("perils mines workbook"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"periplus mine cookbooks\") OR (\"periplus mine workbooks\"))) or (\"perils mines workbook\"))*".
• Removing quotes may allow a broader search: (((( periplus mine cookbooks ) OR ( periplus mine workbooks ))) or ( perils mines workbook ))*.