Talvez deva tentar algumas variações de ortografia:
quality processing » quality processes (Expandir a busca), quality process (Expandir a busca), dairy processing (Expandir a busca)
database quality » data quality (Expandir a busca), database query (Expandir a busca)
decrease their » decrease the (Expandir a busca), increase their (Expandir a busca), decreases the (Expandir a busca)
their database » thesis database (Expandir a busca), the database (Expandir a busca), theses database (Expandir a busca)
decrease at » decrease akt (Expandir a busca), decrease and (Expandir a busca), decrease in (Expandir a busca)
at decrease » rate decrease (Expandir a busca), that decrease (Expandir a busca), and decrease (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease their database quality processing ) OR ( decrease _ decrease at decrease ))~.