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 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"
"radio science three ii:, mathematics, physics and chemistry" » "radio science thin ii:, mathematics, physics and chemistry", "radio science third ii:, mathematics, physics and chemistry", "radio science three i:, mathematics, physics and chemistry", "radio science three ion:, 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 series 1:, mathematics, physics and chemistry") OR ("radio science series 2:, mathematics, physics and chemistry"))) OR ((("radio science theories ii:, mathematics, physics and chemistry") OR ("radio science three 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\") OR (\"radio science three 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 ) OR ( radio science three ii:, mathematics, physics and chemistry )))).
• Adding a wildcard symbol may retrieve word variants: (((("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") OR ("radio science three ii:, mathematics, physics and chemistry"))))*.