Talvez deva tentar algumas variações de ortografia:
increase their » increase the (Expandir a busca), increases the (Expandir a busca), increased the (Expandir a busca)
their problems » the problems (Expandir a busca)
decrease the » decreases the (Expandir a busca), decrease of (Expandir a busca)
the decrease » to decrease (Expandir a busca), and decrease (Expandir a busca)
decrease its » decreases its (Expandir a busca), decrease with (Expandir a busca), increase its (Expandir a busca)
its decrease » with decrease (Expandir a busca), nts decreases (Expandir a busca), to decrease (Expandir a busca)
in increase » in increased (Expandir a busca), an increase (Expandir a busca), and increase (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease in increase their problems ) OR ( decrease the decrease its decrease ))~.