Perhaps you should try some spelling variations:
comparative macroeconomic » comparative economic, comprehensive macroeconomic, comparative economics
alternative macroeconomic » alternative economic, international macroeconomic
macroeconomic theories » macroeconomic theory, macroeconomic series, microeconomic theory
macroeconomic sources » microeconomic resources, macroeconomic series, macroeconomic outcomes
bang alternative » bank alternative, making alternative, anhang alternative
world tank » world bank, world tasks, world frank
world task » world tasks, worlds task, world mask
world bang » world bank, world gang, world yang

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) OR (world task)) comparative macroeconomic theories ) OR ( the world bang alternative macroeconomic sources )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the ((world tank) OR (world task)) comparative macroeconomic theories ) or ( the world bang alternative macroeconomic sources ))".
• Adding a wildcard symbol may retrieve word variants: (( the ((world tank) OR (world task)) comparative macroeconomic theories ) or ( the world bang alternative macroeconomic sources ))*.