Perhaps you should try some spelling variations:
comparative macroeconomic » comparative economic, comprehensive macroeconomic, comparative economics
microeconomic resources » economic resources, microeconomic issues, macroeconomic research
macroeconomic theories » macroeconomic theory, macroeconomic series, microeconomic theory
macroeconomic sources » macroeconomic series, macroeconomic outcomes, macroeconomic closures
tank comparative » talk comparative, dark comparative, mutans comparative
bang alternative » bank alternative, making alternative, anhang alternative
world tank » world bank, world task, world tasks
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 comparative macroeconomic theories ) OR ( the world bang alternative ((macroeconomic sources) OR (microeconomic resources)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( the world tank comparative macroeconomic theories ) or ( the world bang alternative ((macroeconomic sources) OR (microeconomic resources)) ))".
• Adding a wildcard symbol may retrieve word variants: (( the world tank comparative macroeconomic theories ) or ( the world bang alternative ((macroeconomic sources) OR (microeconomic resources)) ))*.