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 de servicio", "investigacion logistica en servicio", "investigacion logistico de servicio"
"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"

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 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 creativa del servicio"))))*.
• Removing quotes may allow a broader search: (( investigacion objetivo del servicio ) or ((( investigacion logistica del servicio ) or ( investigacion creativa del servicio ))))*.