Perhaps you should try some spelling variations:
"justificacion estrategica" » "planificacion estrategica", "utilizacion estrategica", "gamificacion estrategia"
"planificacion estrategia" » "planificacion estrategica", "gamificacion estrategia", "planeacion estrategica"
"gamificacion estrategias" » "gamificacion estrategia", "comunicacion estrategias", "aplicacion estrategias"
"communication strategy" » "communication strategies", "communicative strategies", "communication systems"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("planificacion estrategia") or ((("gamificacion estrategias") or ("communication strategy"))))) or ("justificacion estrategica"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("planificacion estrategia") OR ((("gamificacion estrategias") OR ("communication strategy"))))) OR ("justificacion estrategica"))*.
• Removing quotes may allow a broader search: (((( planificacion estrategia ) or ((( gamificacion estrategias ) or ( communication strategy ))))) or ( justificacion estrategica ))*.