Talvez debería tentar con algunhas variantes ortográficas:
extractiong » extraction
extractions » extraction
pesotraccion » extraccion
extracton » extraction, extractor, extractant
extracting » extraction
extractionwas » extraction

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((extractiong or extractions) or pesotraccion) or (extracton or extracting)) or extractionwas)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((extractiong OR extractions) OR pesotraccion) OR (extracton OR extracting)) OR extractionwas).
• Adding a wildcard symbol may retrieve word variants: ((((extractiong or extractions) or pesotraccion) or (extracton or extracting)) or extractionwas)*.