Perhaps you should try some spelling variations:
"internally disposed persons" » "internally dispalced persons", "internally deposited persons", "externally imposed persons", "internally diseased persons", "internally displaced persons", "internally disabled persons"
"internally displaced person" » "internally displaced persons", "internally disabled person"
"internally displaced people" » "internally disabled people"

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: (((("internally displaced person") OR ("internally displaced people"))) OR ("internally disposed persons")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"internally displaced person\") OR (\"internally displaced people\"))) or (\"internally disposed persons\"))".
• Removing quotes may allow a broader search: (((( internally displaced person ) OR ( internally displaced people ))) or ( internally disposed persons )).
• Adding a wildcard symbol may retrieve word variants: (((("internally displaced person") OR ("internally displaced people"))) or ("internally disposed persons"))*.