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 2:, mathematics, physics and chemistry"
"radio science theories 1:, mathematics, physics and chemistry" » "radio science theory 1:, mathematics, physics and chemistry", "radio science three 1:, mathematics, physics and chemistry", "radio science theories 3:, mathematics, physics and chemistry", "radio science theories 4:, 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"

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 theories ii:, mathematics, physics and chemistry") OR ("radio science theories 1:, 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 theories ii:, mathematics, physics and chemistry\") OR (\"radio science theories 1:, mathematics, physics and chemistry\"))))*".
• Removing quotes may allow a broader search: (( radio science series 1:, mathematics, physics and chemistry ) or ((( radio science theories ii:, mathematics, physics and chemistry ) OR ( radio science theories 1:, mathematics, physics and chemistry ))))*.