Perhaps you should try some spelling variations:
"process control statistics methodology." » "process control semiotics methodology.", "process control statistical methodology.", "process control estadistico methodology.", "process control estadistica methodology."
"proceso contralos linguistics methodology." » "proceso contextos linguisticos methodology.", "proceso contact linguistics methodology.", "proceso contrastive linguistics methodology.", "proceso contra linguistics methodology.", "proces contreles linguistics methodology.", "procesos contables linguistics methodology."

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"proceso contralos linguistics methodology.\") OR (\"process control statistics methodology.\"))~".
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