Talvez deva tentar algumas variações de ortografia:
coffee nitrogen » coffee pathogens (Expandir a busca)
nitrogen vector » pathogen vector (Expandir a busca), nitrogen vapor (Expandir a busca), pathogen vectors (Expandir a busca)
vector computer » vector computers (Expandir a busca), reactors computer (Expandir a busca), vector competent (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
using logic » using log (Expandir a busca), using logistic (Expandir a busca), using reologic (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coffee nitrogen vector computer program ) OR ( using logic python python programming ))~.