Perhaps you should try some spelling variations:
"perils mine workbooks" » "perils mines workbooks", "perils line workbooks", "perils eine workbooks"
"perils minds cookbooks" » "perils finds cookbooks", "perils mines cookbooks", "perils kinds cookbooks", "perils mids cookbooks", "perils winds cookbooks"
"perils mind cookbooks" » "perils find cookbooks", "perils mid cookbooks", "perils wind cookbooks"

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: (("perils mine workbooks") OR ((("perils minds cookbooks") OR ("perils mind cookbooks"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"perils mine workbooks\") or (((\"perils minds cookbooks\") OR (\"perils mind cookbooks\"))))~".
• Removing quotes may allow a broader search: (( perils mine workbooks ) or ((( perils minds cookbooks ) OR ( perils mind cookbooks ))))~.
• Adding a wildcard symbol may retrieve word variants: (("perils mine workbooks") or ((("perils minds cookbooks") OR ("perils mind cookbooks"))))*.