Perhaps you should try some spelling variations:
"social control estadistica methodology." » "social control statistics methodology.", "social control estadistico methodology.", "social control statistical methodology.", "social economia estadistica methodology."
"procesal control statistics methods." » "procesal control statistical methods.", "procesal control statistics methodology.", "procesal control estadistico methods.", "procesal century statistics methods.", "process control statistics methods.", "proceso contra statistics methods.", "proces contre statistics methods."

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: (("procesal control statistics methods.") or ("social control estadistica methodology."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("procesal control statistics methods.") OR ("social control estadistica methodology.")).
• Removing quotes may allow a broader search: (( procesal control statistics methods. ) or ( social control estadistica methodology. )).
• Adding a wildcard symbol may retrieve word variants: (("procesal control statistics methods.") or ("social control estadistica methodology."))*.