Perhaps you should try some spelling variations:
national under » rational under, national und, nation under
und national » und nationale, und nationaler, und nationalen
11 football » _ football, 4 football, 3 football
a football » _ football
team » term

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "und national under-((11 football) OR (a football)) team".
• Adding a wildcard symbol may retrieve word variants: und national under-((11 football) OR (a football)) team*.