Perhaps you should try some spelling variations:
"nato science services 1:, applied sciences" » "nato science service 1:, applied sciences", "nato science overview 1:, applied sciences", "nato voice services 1:, applied sciences", "national science services 1:, applied sciences", "nato science services 10:, applied sciences", "nato science services 12:, applied sciences", "nato science services 11:, applied sciences"
"radio science services 1:, applied sciences" » "radio science service 1:, applied sciences", "radio science overview 1:, applied sciences", "radio voice services 1:, applied sciences", "radio science services 10:, applied sciences", "radio science services 12:, applied sciences", "radio science services 11:, applied sciences"
"nato science series 1:, applied sciences" » "nato science stories 1:, applied sciences", "nato science theories 1:, applied sciences", "nato sciences serious 1:, applied sciences", "national science series 1:, applied sciences", "nato science series 3:, applied sciences", "nato science series 2:, applied sciences"

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 1:, applied sciences") OR ((("nato science services 1:, applied sciences") OR ("radio science services 1:, applied sciences")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nato science series 1:, applied sciences\") or (((\"nato science services 1:, applied sciences\") OR (\"radio science services 1:, applied sciences\"))))".
• Removing quotes may allow a broader search: (( nato science series 1:, applied sciences ) or ((( nato science services 1:, applied sciences ) OR ( radio science services 1:, applied sciences )))).
• Adding a wildcard symbol may retrieve word variants: (("nato science series 1:, applied sciences") or ((("nato science services 1:, applied sciences") OR ("radio science services 1:, applied sciences"))))*.