Talvez deva tentar algumas variações de ortografia:
diseases dentistry » disease dentistry (Expandir a busca), diseases registro (Expandir a busca), issues dentistry (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
decrease toc » decrease of (Expandir a busca), decrease the (Expandir a busca), decrease on (Expandir a busca)
toc diseases » toxic diseases (Expandir a busca), atopic diseases (Expandir a busca), back diseases (Expandir a busca)
python api » python and (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease toc diseases dentistry program ) OR ( python api python python programming ))~.