Perhaps you should try some spelling variations:
"investigacion logistica del servicio" » "investigacion holistica del servicio", "investigacion linguistica del servicio", "investigacion artistica del servicio", "investigacion logistica en servicio", "investigacion logistico de servicio", "investigacion logistica y servicio"
"investigacion logistica de servicio" » "investigacion holistica de servicio", "investigacion linguistica de servicio", "investigacion artistica de servicio", "investigacion logistica de servicios"
"investigacion creativa del servicio" » "investigacion formativa del servicio", "investigacion operativa del servicio", "investigacion narrativa del servicio", "investigacion creativa de servicio", "investigacion creativo del servicio", "investigacion creativos del servicio"
"investigacion objetivo del servicio" » "investigacion objetivos del servicio", "investigacion objetivo de servicio", "investigacion objetivo 2 servicio"

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: (("investigacion objetivo del servicio") or ((((("investigacion logistica del servicio") OR ("investigacion logistica de servicio"))) or ("investigacion creativa del servicio"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("investigacion objetivo del servicio") OR ((((("investigacion logistica del servicio") OR ("investigacion logistica de servicio"))) OR ("investigacion creativa del servicio")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"investigacion objetivo del servicio\") or (((((\"investigacion logistica del servicio\") OR (\"investigacion logistica de servicio\"))) or (\"investigacion creativa del servicio\"))))".
• Removing quotes may allow a broader search: (( investigacion objetivo del servicio ) or ((((( investigacion logistica del servicio ) OR ( investigacion logistica de servicio ))) or ( investigacion creativa del servicio )))).
• Adding a wildcard symbol may retrieve word variants: (("investigacion objetivo del servicio") or ((((("investigacion logistica del servicio") OR ("investigacion logistica de servicio"))) or ("investigacion creativa del servicio"))))*.