Perhaps you should try some spelling variations:
"contrary profesor" » "contrario profesor", "contra profesor", "contrato profesor", "contrary proceso", "contrary procesos"
"contrary profesora" » "contrario profesora", "contra profesora", "contrato profesora", "contrary procesoa", "contrary procesosa", "contrary profesorado"
"contrary profesores" » "contrario profesores", "contra profesores", "contrato profesores", "contrary procesoes", "contrary procesoses"

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

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