Perhaps you should try some spelling variations:
"problemas of induction" » "problemas of infection", "problemas of introduction", "problemaas of induction", "problemsas of induction"
"problemas of reduction" » "problemas of reduccion", "problemas of production", "problemas of education", "problemaas of reduction", "problemsas of reduction"
"problem of induccion" » "problema of induccion", "problems of induccion", "problem of reduccion", "problem of introduccion"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("problemas of induction") OR ("problemas of reduction"))) OR ("problem of induccion"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"problemas of induction\") OR (\"problemas of reduction\"))) OR (\"problem of induccion\"))".
• Removing quotes may allow a broader search: (((( problemas of induction ) OR ( problemas of reduction ))) OR ( problem of induccion )).
• Adding a wildcard symbol may retrieve word variants: (((("problemas of induction") OR ("problemas of reduction"))) OR ("problem of induccion"))*.