Perhaps you should try some spelling variations:
"occupational opportunity" » "occupational opportunities", "exceptional opportunity", "occupational mortality"
"educational opportunity" » "educational opportunities"
"occupational contact" » "occupational choice"

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: (((("occupational opportunity") OR ("occupational contact"))) OR ("educational opportunity")).
• Removing quotes may allow a broader search: (((( occupational opportunity ) or ( occupational contact ))) or ( educational opportunity )).
• Adding a wildcard symbol may retrieve word variants: (((("occupational opportunity") or ("occupational contact"))) or ("educational opportunity"))*.