Perhaps you should try some spelling variations:
"costa ricas" » "costa rica's", "costa rican", "costa richs", "costa ritas"
"cost price" » "just price", "list price", "lowest price"
"costa rice" » "costa rican", "costs price", "costa rita"
"costa rica" » "costa rich", "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 ((((("costa rice") OR ("cost price"))) OR ("costa ricas")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"costa rica\") or (((((\"costa rice\") OR (\"cost price\"))) or (\"costa ricas\"))))".
• Removing quotes may allow a broader search: (( costa rica ) or ((((( costa rice ) OR ( cost price ))) or ( costa ricas )))).
• Adding a wildcard symbol may retrieve word variants: (("costa rica") or ((((("costa rice") OR ("cost price"))) or ("costa ricas"))))*.