Perhaps you should try some spelling variations:
comparative macroeconomic » comparative economic, comprehensive macroeconomic, comparative economics
macroeconomic series » macroeconomic theories, macroeconomic crises, macroeconomic systems
tank comparative » dark comparative, mutans comparative, parks comparative
talk comparative » italy comparative, dark comparative, parks comparative
politics studies » political studies, policy studies, optics studies
world tank » world bank, world task, world tasks
could » would

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 series ) OR ( the could talk comparative politics studies )).
• Adding a wildcard symbol may retrieve word variants: (( the world tank comparative macroeconomic series ) or ( the could talk comparative politics studies ))*.