Perhaps you should try some spelling variations:
"marine resources conventional --" » "marine resources international --", "marine resources collection --", "marine resources conversation --", "marine researchs conventional --", "maritime resourcess conventional --"
"marine resource collection --" » "marine resources collection --", "marine resource allocation --", "marine reference collection --", "marine research collection --", "maritime resources collection --"
"marine resources conservation --" » "marine researchs conservation --", "maritime resourcess conservation --"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("marine resources conservation --") or ((("marine resources conventional --") or ("marine resource collection --"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("marine resources conservation --") OR ((("marine resources conventional --") OR ("marine resource collection --")))).
• Removing quotes may allow a broader search: (( marine resources conservation -- ) or ((( marine resources conventional -- ) or ( marine resource collection -- )))).
• Adding a wildcard symbol may retrieve word variants: (("marine resources conservation --") or ((("marine resources conventional --") or ("marine resource collection --"))))*.