Perhaps you should try some spelling variations:
middle east1 » middle east, middle east's, middle earth
middle last » middle east, middle class, middle late
2f foreign » 2 foreign, 23 foreign, 24 foreign
2f united » 2 united, 20 united, 22 united
21 units » 2.1 units, 2 units, 11 units
2 unity » 2 units

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 east1) OR (middle last)) %2f foreign relations %((((2f united) OR (2 unity))) OR (((21 units) OR (1 units)))) states%22.
• Adding a wildcard symbol may retrieve word variants: %((middle east1) or (middle last)) %2f foreign relations %((((2f united) or (2 unity))) or (((21 units) or (1 units)))) states%22*.