Perhaps you should try some spelling variations:
basic series » basics series, basic services, basic queries
asi series » anti series, capi series, i series
psi series » i series, iii series
ii series » iii series, i series, ii services
sciences » science

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 ((asi series) OR (basic series)), series 11: applied sciences ) OR ( nato ((psi series) OR (ii series)), series 11: applied sciences )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( nato ((asi series) or (basic series)), series 11: applied sciences ) or ( nato ((psi series) OR (ii series)), series 11: applied sciences ))".
• Adding a wildcard symbol may retrieve word variants: (( nato ((asi series) or (basic series)), series 11: applied sciences ) or ( nato ((psi series) OR (ii series)), series 11: applied sciences ))*.