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

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: (((("planificacion estrategia") or ((("gamificacion estrategias") or ("communication strategy"))))) or ("gamificacion estrategia"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("planificacion estrategia") OR ((("gamificacion estrategias") OR ("communication strategy"))))) OR ("gamificacion estrategia")).
• Removing quotes may allow a broader search: (((( planificacion estrategia ) or ((( gamificacion estrategias ) or ( communication strategy ))))) or ( gamificacion estrategia )).
• Adding a wildcard symbol may retrieve word variants: (((("planificacion estrategia") or ((("gamificacion estrategias") or ("communication strategy"))))) or ("gamificacion estrategia"))*.