Perhaps you should try some spelling variations:
intensity conflicts » identity conflict
military sciences » auxiliary sciences, military sites, military defence
military since » military space, military site, military finance

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: %22low-intensity conflicts %((((28military science) OR (military since))) OR (((military sciences) OR (military science))))%29%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22low-intensity conflicts %((((28military science) OR (military since))) or (((military sciences) or (military science))))%29%22".
• Adding a wildcard symbol may retrieve word variants: %22low-intensity conflicts %((((28military science) OR (military since))) or (((military sciences) or (military science))))%29%22*.