Perhaps you should try some spelling variations:
middle east's » middle eastern, middle ears, middle earth
2f foreign » 2 foreign, 23 foreign, 24 foreign
21 united » 11 united, 2 united, 1 united
12 unit » 12 united
2 unit » 2 units, 2 unity

Try widening your search to All Fields.

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: %((middle east's) OR (middle class)) %2f foreign relations %((((2 unit) OR (12 unit))) OR (21 united)) states%22.
• Adding a wildcard symbol may retrieve word variants: %((middle east's) or (middle class)) %2f foreign relations %((((2 unit) or (12 unit))) or (21 united)) states%22*.