Talvez deva tentar algumas variações de ortografia:
increases learning » increases bleaching (Expandir a busca), increasing learning (Expandir a busca), increased weaning (Expandir a busca)
learning object » learning objects (Expandir a busca)
toc increases » toxic increases (Expandir a busca), 29c increases (Expandir a busca), co2 increases (Expandir a busca)
decrease the » decreases the (Expandir a busca), decrease in (Expandir a busca), decrease of (Expandir a busca)
the decrease » to decrease (Expandir a busca), and decrease (Expandir a busca)
decrease toc » decrease of (Expandir a busca), decreased to (Expandir a busca), decrease on (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease _ decrease the decrease ) OR ( decrease toc increases learning object ))~.