Perhaps you should try some spelling variations:
significant physical » significant medical
significant policy » significant points
significant prior » significant pre, significant persons, significant purpose
significant areas » significant dates, significant aspects, significant events

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: ((((significant policy) OR (((significant prior) OR (significant areas))))) OR (significant physical)).
• Adding a wildcard symbol may retrieve word variants: ((((significant policy) or (((significant prior) or (significant areas))))) or (significant physical))*.