Talvez deva tentar algumas variações de ortografia:
structure process » structural process (Expandir a busca), structural processes (Expandir a busca), structure property (Expandir a busca)
phrase structure » phase structure (Expandir a busca), frame structure (Expandir a busca), age structure (Expandir a busca)
decrease further » increase further (Expandir a busca), disease further (Expandir a busca), decrease the (Expandir a busca)
further decrease » further increase (Expandir a busca), faster decrease (Expandir a busca), the decrease (Expandir a busca)
decrease burden » disease burden (Expandir a busca)
burden decrease » burden disease (Expandir a busca), urea decrease (Expandir a busca), burgers decreases (Expandir a busca)
decrease and » decreases and (Expandir a busca), decrease in (Expandir a busca), decrease of (Expandir a busca)
and phrase » and phrases (Expandir a busca), and phase (Expandir a busca), and phytase (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease and phrase structure process ) OR ( decrease burden decrease further decrease ))~.