Perhaps you should try some spelling variations:
"un manual a " » "_ manual a ", "a manual a ", "1 manual a ", "un manual _ "
"um manual a " » "_ manual a ", "a manual a ", "1 manual a ", "um manual _ "
"un manuel a " » "juan manuel a ", "luz manuel a ", "rui manuel a ", "un miguel a "
en accion » en action, en actions, la accion
ideas en » ideas can, ideas led, ideas new

Try widening your search to All Fields.

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: (((("un manual a ") OR ("um manual a "))) OR ("un manuel a "))ideas en accion"".
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"un manual a \") OR (\"um manual a \"))) or (\"un manuel a \"))ideas en accion\"\"".
• Removing quotes may allow a broader search: (((( un manual a ) OR ( um manual a ))) or ( un manuel a ))ideas en accion.