Perhaps you should try some spelling variations:
"contrato perm anente" » "contrato por anente" (Expand Search), "contrato pela anente" (Expand Search), "contrato de anente" (Expand Search), "contrato permanente y" (Expand Search), "contrato _ permanente" (Expand Search), "contrato y permanente" (Expand Search)
"contrato para anente" » "contrato por anente" (Expand Search), "contrato para agentes" (Expand Search), "contrato para atender" (Expand Search)
"contrato a anente" » "contrato y anente" (Expand Search), "contrato de anente" (Expand Search), "contrato en anente" (Expand Search)

Try widening your search to All Fields.

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

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