Perhaps you should try some spelling variations:
"lnvestigacion transformacion de servicio" » "investigacion transformacion de servicio", "lnvestigacion transformativa de servicio", "investigacion formacion de servicio", "lnvestigacion transformacion de servicios"
"investigacion asociativa del servicio" » "investigacion asociacion del servicio", "investigacion educativa del servicio", "investigacion formativa del servicio", "investigacion asociativa de servicio", "investigacion asociativo del servicio", "investigacion asociativo de 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 asociativa del servicio") OR ("lnvestigacion transformacion de servicio"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"investigacion asociativa del servicio\") OR (\"lnvestigacion transformacion de servicio\"))".
• Removing quotes may allow a broader search: (( investigacion asociativa del servicio ) OR ( lnvestigacion transformacion de servicio )).
• Adding a wildcard symbol may retrieve word variants: (("investigacion asociativa del servicio") OR ("lnvestigacion transformacion de servicio"))*.