Perhaps you should try some spelling variations:
"radio science theories ii:, mathematics, physics and chemistry" » "radio science theory ii:, mathematics, physics and chemistry", "radio science three ii:, mathematics, physics and chemistry", "radio science theories 1:, mathematics, physics and chemistry", "radio science theories 2:, mathematics, physics and chemistry"
"radio science series 1:, mathematics, physics and chemistry" » "radio science services 1:, mathematics, physics and chemistry", "radio science stories 1:, mathematics, physics and chemistry", "radio sciences serious 1:, mathematics, physics and chemistry", "radio science series 3:, mathematics, physics and chemistry"
"radio science series 2:, mathematics, physics and chemistry" » "radio science services 2:, mathematics, physics and chemistry", "radio science stories 2:, mathematics, physics and chemistry", "radio sciences serious 2:, mathematics, physics and chemistry", "radio science series 3:, mathematics, physics and chemistry"

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 series 1:, mathematics, physics and chemistry") OR ("radio science series 2:, mathematics, physics and chemistry"))) OR ("radio science theories ii:, mathematics, physics and chemistry"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"radio science series 1:, mathematics, physics and chemistry\") OR (\"radio science series 2:, mathematics, physics and chemistry\"))) or (\"radio science theories ii:, mathematics, physics and chemistry\"))*".
• Removing quotes may allow a broader search: (((( radio science series 1:, mathematics, physics and chemistry ) OR ( radio science series 2:, mathematics, physics and chemistry ))) or ( radio science theories ii:, mathematics, physics and chemistry ))*.