Perhaps you should try some spelling variations:
"animal science theories 10:, physics" » "animal science theory 10:, physics", "animal science three 10:, physics", "animal science theories 1:, physics", "animal science theories 11:, physics", "animal science theories 3:, physics"
"nato science series 10:, physics" » "nato science services 10:, physics", "nato science stories 10:, physics", "nato sciences serious 10:, physics", "radio science series 10:, physics", "national science series 10:, physics", "nato science series 1:, physics", "nato science series 3:, physics", "nato science series 2:, physics"
"animal science series 10:, physics" » "animal science services 10:, physics", "animal science stories 10:, physics", "animal sciences serious 10:, physics", "animal science series 1:, physics", "animal science series 3:, physics", "animal science series 2:, physics"

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: (("nato science series 10:, physics") OR ((("animal science series 10:, physics") OR ("animal science theories 10:, physics")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nato science series 10:, physics\") or (((\"animal science series 10:, physics\") OR (\"animal science theories 10:, physics\"))))".
• Removing quotes may allow a broader search: (( nato science series 10:, physics ) or ((( animal science series 10:, physics ) OR ( animal science theories 10:, physics )))).
• Adding a wildcard symbol may retrieve word variants: (("nato science series 10:, physics") or ((("animal science series 10:, physics") OR ("animal science theories 10:, physics"))))*.