Talvez deva tentar algumas variações de ortografia:
opinion extraction » solution extraction (Expandir a busca), lignin extraction (Expandir a busca), non extraction (Expandir a busca)
at programming » arts programming (Expandir a busca), data programming (Expandir a busca), and programming (Expandir a busca)
coder opinion » voter opinion (Expandir a busca), model opinion (Expandir a busca), concern opinion (Expandir a busca)
extraction at » extraction an (Expandir a busca), extraction and (Expandir a busca), extraction ase (Expandir a busca)
coding python » codigo python (Expandir a busca), codigos python (Expandir a busca), using python (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
using coding » using coping (Expandir a busca), using coating (Expandir a busca), using cooking (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder opinion extraction at programming ) OR ( using coding python python programming ))~.