Perhaps you should try some spelling variations:
"military operational" » "military operations", "military cooperation", "military observations"
"military pensions" » "military operations", "military relations"
"military personnel" » "military personal"

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: (("military personnel") OR ((("military pensions") OR ("military operational")))).
• Removing quotes may allow a broader search: (( military personnel ) or ((( military pensions ) or ( military operational )))).
• Adding a wildcard symbol may retrieve word variants: (("military personnel") or ((("military pensions") or ("military operational"))))*.