Perhaps you should try some spelling variations:
mexican national » mexico's national, mexican international
african national » african regional, african traditional, africa regional
ad championship » _ championship, 25 championship, iv championship
a championship » _ championship
radio ad » radio _
road a » road _

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: (( mexican national radio ad championship ) OR ( ((african national) OR (american national)) road a championship )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( mexican national radio ad championship ) or ( ((african national) OR (american national)) road a championship ))".
• Adding a wildcard symbol may retrieve word variants: (( mexican national radio ad championship ) or ( ((african national) OR (american national)) road a championship ))*.