Perhaps you should try some spelling variations:
una pala » una cala, una parola, una paria
con una » con un
y unad » y und, y unas, y unidad
y una » y und, _ una, a una
sombrero » obrero, somber, sombre

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: con una pala ((y una) OR (y unad)) (sombrero OR sobrero).
• The words AND, OR and NOT may confuse the search; try adding quotes: "con una pala ((y una) or (y unad)) (sombrero OR sobrero)".
• Adding a wildcard symbol may retrieve word variants: con una pala ((y una) or (y unad)) (sombrero OR sobrero)*.