Talvez deva tentar algumas variações de ortografia:
system decrease » system decreases (Expandir a busca), system increase (Expandir a busca), symptom decrease (Expandir a busca)
hiv programing » java programing (Expandir a busca), pair programing (Expandir a busca), line programing (Expandir a busca)
package python » pacote python (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
coded system » coded systems (Expandir a busca), code system (Expandir a busca), closed system (Expandir a busca)
decrease hiv » decreases hip (Expandir a busca), decrease in (Expandir a busca), decrease il (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coded system decrease hiv programing ) OR ( python package python python programming ))~.