Perhaps you should try some spelling variations:
"problema of induction" » "problemas of induction", "problema of induccion", "problema of infection", "problema of introduction"
"problema of reduction" » "problemas of reduction", "problema of production", "problema of education", "problema of reaction"
"problema of reduccion" » "problemas of reduccion", "problema of produccion", "problema of traduccion", "problema of educacion"

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

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