Perhaps you should try some spelling variations:
"radio science services 1:, mathematics, physics and chemistry" » "radio science overview 1:, mathematics, physics and chemistry", "radio voice services 1:, mathematics, physics and chemistry", "radio science services 10:, mathematics, physics and chemistry", "radio science services 12:, mathematics, physics and chemistry", "radio science services 11:, mathematics, physics and chemistry"
"radio science theories 2:, mathematics, physics and chemistry" » "radio science theory 2:, mathematics, physics and chemistry", "radio science three 2:, mathematics, physics and chemistry", "radio science theories 3:, mathematics, physics and chemistry", "radio science theories 4:, mathematics, physics and chemistry", "radio science theories 1:, mathematics, physics and chemistry"
"radio science service 1:, mathematics, physics and chemistry" » "radio science service 10:, mathematics, physics and chemistry", "radio science service 13:, mathematics, physics and chemistry", "radio science service 16:, mathematics, physics and chemistry"

Try widening your search to All Fields.

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 1:, mathematics, physics and chemistry") OR ("radio science service 1:, mathematics, physics and chemistry"))) OR ("radio science theories 2:, mathematics, physics and chemistry")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"radio science services 1:, mathematics, physics and chemistry\") OR (\"radio science service 1:, mathematics, physics and chemistry\"))) or (\"radio science theories 2:, mathematics, physics and chemistry\"))".
• Removing quotes may allow a broader search: (((( radio science services 1:, mathematics, physics and chemistry ) OR ( radio science service 1:, mathematics, physics and chemistry ))) or ( radio science theories 2:, mathematics, physics and chemistry )).
• Adding a wildcard symbol may retrieve word variants: (((("radio science services 1:, mathematics, physics and chemistry") OR ("radio science service 1:, mathematics, physics and chemistry"))) or ("radio science theories 2:, mathematics, physics and chemistry"))*.