Perhaps you should try some spelling variations:
"periplus mines workbooks" » "periplus maris workbooks", "periplus lines workbooks", "periplus eines workbooks", "periplus nines workbooks"
"periplus mine cookbooks" » "periplus line cookbooks", "periplus eine cookbooks", "periplus nine cookbooks"
"periplus lines workbooks" » "periplus line 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 mines workbooks") OR ("periplus lines workbooks"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"periplus mine cookbooks\") OR (((\"periplus mines workbooks\") OR (\"periplus lines workbooks\"))))".
• Removing quotes may allow a broader search: (( periplus mine cookbooks ) OR ((( periplus mines workbooks ) OR ( periplus lines workbooks )))).
• Adding a wildcard symbol may retrieve word variants: (("periplus mine cookbooks") OR ((("periplus mines workbooks") OR ("periplus lines workbooks"))))*.