Talvez deva tentar algumas variações de ortografia:
functions problem » functions problems (Expandir a busca), function problems (Expandir a busca), functional problems (Expandir a busca)
coder functions » power functions (Expandir a busca), order functions (Expandir a busca), colour functions (Expandir a busca)
coating python » coating method (Expandir a busca), coating pathogens (Expandir a busca)
using coating » using coatings (Expandir a busca), using rotating (Expandir a busca), using cutting (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
from array » from arrays (Expandir a busca), from areas (Expandir a busca), from spray (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder functions problem from array ) OR ( using coating python python programming ))~.