Instituto para la
Investigación Educativa
y el Desarrollo Pedagógico

Perhaps you should try some spelling variations:
"head of state" » "head or state", "head of shame", "had of state", "read of state", "lead of state"
"heads of state" » "heads or state", "heads of shame", "means of state", "years of state", "hads of state", "reads of state", "leads of state"
"head of hate" » "head of shame", "had of hate", "read of hate", "lead of hate"
"mead of late" » "means of late", "mead of latin"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("head of state") OR ("heads of state"))) OR ("head of hate"))) OR ("mead of late"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"head of state\") OR (\"heads of state\"))) OR (\"head of hate\"))) OR (\"mead of late\"))".
• Removing quotes may allow a broader search: (((((( head of state ) OR ( heads of state ))) OR ( head of hate ))) OR ( mead of late )).
• Adding a wildcard symbol may retrieve word variants: (((((("head of state") OR ("heads of state"))) OR ("head of hate"))) OR ("mead of late"))*.