Perhaps you should try some spelling variations:
"mixed initial career" » "mixed initial care", "mixed initial case", "mixed initial charge", "mixed martial career", "mixed initiative career"
"mixed partial case" » "mixed martial case", "based partial case", "mixed impartial case", "mixed particle case", "mixed partial phase"

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: (("mixed initial career") OR ("mixed partial case"))*.
• Removing quotes may allow a broader search: (( mixed initial career ) or ( mixed partial case ))*.