Perhaps you should try some spelling variations:
distribution political » distribution policy, distributions statistical
ele distribution » file distribution, hole distribution, mile distribution
teoria della » storia della
historia del » historia de
idee bis » idee des, idee die
bis ele » bis euler, bis ende, bis eben

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: ((teoria della) OR (historia del)) idee bis ele distribution political.
• Adding a wildcard symbol may retrieve word variants: ((teoria della) or (historia del)) idee bis ele distribution political*.