Perhaps you should try some spelling variations:
"AEI studies on survey round negotiations." » "AEI studies on survey loan negotiations.", "AEI studies on survey loan negotiation."
"aei studies on series trade negotiations." » "aei studies on services trade negotiations.", "aei studies on serious trader negotiations.", "aei studies on reserves trade negotiations."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("aei studies on series trade negotiations.") or ("AEI studies on survey round negotiations."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("aei studies on series trade negotiations.") OR ("AEI studies on survey round negotiations.")).
• Removing quotes may allow a broader search: (( aei studies on series trade negotiations. ) or ( AEI studies on survey round negotiations. )).
• Adding a wildcard symbol may retrieve word variants: (("aei studies on series trade negotiations.") or ("AEI studies on survey round negotiations."))*.