Perhaps you should try some spelling variations:
"proceso contra service methodology." » "proceso contra science methodology.", "proceso contra sciences methodology.", "process control service methodology.", "proceso consular service methodology."
"procesos problems statistical methods." » "procesos process statistical methods.", "procesos penales statistical methods.", "procesos problems statistics methods.", "procesos problems estadisticas methods."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("proceso contra service methodology.") or ("procesos problems statistical methods."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("proceso contra service methodology.") OR ("procesos problems statistical methods.")).
• Removing quotes may allow a broader search: (( proceso contra service methodology. ) or ( procesos problems statistical methods. )).
• Adding a wildcard symbol may retrieve word variants: (("proceso contra service methodology.") or ("procesos problems statistical methods."))*.