Perhaps you should try some spelling variations:
"radio science services c:, mathematical and medical sciences" » "radio science overview c:, mathematical and medical sciences", "radio voice services c:, mathematical and medical sciences", "radio science services c:, mathematical and social sciences", "radio science services ch:, mathematical and medical sciences", "radio science services case:, mathematical and medical sciences"
"national science service c:, mathematical and physical sciences" » "natural science service c:, mathematical and physical sciences", "spatial science service c:, mathematical and physical sciences", "animal science service c:, mathematical and physical sciences"

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: (("radio science services c:, mathematical and medical sciences") OR ("national science service c:, mathematical and physical sciences")).
• Removing quotes may allow a broader search: (( radio science services c:, mathematical and medical sciences ) or ( national science service c:, mathematical and physical sciences )).
• Adding a wildcard symbol may retrieve word variants: (("radio science services c:, mathematical and medical sciences") or ("national science service c:, mathematical and physical sciences"))*.