Perhaps you should try some spelling variations:
"radio science services a:, life sciences" » "radio science service a:, life sciences", "radio science overview a:, life sciences", "radio voice services a:, life sciences"
"radio science theories a:, life sciences" » "radio science theory a:, life sciences", "radio science three a:, life sciences"
"radio science stories a:, life sciences" » "radio science studies a:, life sciences", "radio science series a:, life sciences", "radio science stories _:, life sciences"

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