Perhaps you should try some spelling variations:
"costly price" » "costly peace", "monthly price", "country price"
"costs price" » "costs prices", "cost prices", "tests price"
"cost price" » "just price", "list price", "lowest price"
"costa rica" » "costa rich", "costa rice", "costa rita"

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: (("costa rica") OR ((((("costs price") OR ("costly price"))) OR ("cost price")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"costa rica\") or (((((\"costs price\") OR (\"costly price\"))) or (\"cost price\"))))".
• Removing quotes may allow a broader search: (( costa rica ) or ((((( costs price ) OR ( costly price ))) or ( cost price )))).
• Adding a wildcard symbol may retrieve word variants: (("costa rica") or ((((("costs price") OR ("costly price"))) or ("cost price"))))*.