Perhaps you should try some spelling variations:
"introduccion planeacion" » "introduccion evaluacion", "introduccion planteamiento", "introduccion presentacion"
"produccion planeacion" » "produccion evaluacion", "produccion planteamiento", "produccion produccion", "production planeacion", "produccion 38planeacion", "production planteacion"
"produccion planning" » "production planning", "production planting", "produccion planillas", "produccion 38planning", "production plantning"
"produccion planta" » "production plant", "produccion para", "production plan", "production planta", "produccion 38planta", "production plantta"
"produccion plan" » "production plan", "produccion 38plan", "production plant"

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: (((("produccion planning") or ((("produccion planeacion") OR ("introduccion planeacion"))))) or ((("produccion plan") or ("produccion planta"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("produccion planning") OR ((("produccion planeacion") OR ("introduccion planeacion"))))) OR ((("produccion plan") OR ("produccion planta")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"produccion planning\") or (((\"produccion planeacion\") OR (\"introduccion planeacion\"))))) or (((\"produccion plan\") or (\"produccion planta\"))))".
• Removing quotes may allow a broader search: (((( produccion planning ) or ((( produccion planeacion ) OR ( introduccion planeacion ))))) or ((( produccion plan ) or ( produccion planta )))).
• Adding a wildcard symbol may retrieve word variants: (((("produccion planning") or ((("produccion planeacion") OR ("introduccion planeacion"))))) or ((("produccion plan") or ("produccion planta"))))*.