Perhaps you should try some spelling variations:
comparative macroeconomic » comparative economic, comprehensive macroeconomic, comparative economics
macroeconomic studies » microeconomic studies, macroeconomic series, macroeconomic sources
david comparative » acid comparative, covid comparative, valid comparative
world glaucoma » early glaucoma
world david » world divided

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 david comparative macroeconomic studies ) OR ( the world glaucoma comparative macroeconomic studies )).
• Adding a wildcard symbol may retrieve word variants: (( the world david comparative macroeconomic studies ) or ( the world glaucoma comparative macroeconomic studies ))*.