Talvez deva tentar algumas variações de ortografia:
discharges chemical » discharge physical (Expandir a busca), exchanges chemical (Expandir a busca), diseases chemical (Expandir a busca)
chemical properties » physical properties (Expandir a busca), mechanical properties (Expandir a busca), optical properties (Expandir a busca)
akt discharges » arc discharges (Expandir a busca), at discharge (Expandir a busca), and discharges (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
decrease akt » decrease at (Expandir a busca), decrease and (Expandir a busca), decrease after (Expandir a busca)
python code » python coding (Expandir a busca), python redes (Expandir a busca)
code python » codigo python (Expandir a busca), pacote python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( decrease akt discharges chemical properties ) OR ( python code python python programming ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( decrease akt discharges chemical properties ) OR ( python code python python programming ))*.