Perhaps you should try some spelling variations:
comparative macroeconomic » comprehensive macroeconomic, alternative macroeconomic, comparative metagenomic
macroeconomic studies » microeconomic studies, macroeconomic series, macroeconomic sources
comparative economics » comparative genomics, comparative genomic
comparative economic » comparative genomic, comparative genomics
frank comparative » france comparative, bank comparative, rana comparative
tank comparative » bank comparative, talk comparative, dark comparative
world frank » world france, old frank, wild frank
world tank » world task, world tasks, world trans

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: (((( the world tank comparative macroeconomic studies ) OR ( the world frank comparative macroeconomic studies ))) OR ( the world bank ((comparative economics) OR (comparative economic)) studies )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( the world tank comparative macroeconomic studies ) or ( the world frank comparative macroeconomic studies ))) or ( the world bank ((comparative economics) OR (comparative economic)) studies ))".
• Adding a wildcard symbol may retrieve word variants: (((( the world tank comparative macroeconomic studies ) or ( the world frank comparative macroeconomic studies ))) or ( the world bank ((comparative economics) OR (comparative economic)) studies ))*.