Talvez deva tentar algumas variações de ortografia:
competencies central » competencia central (Expandir a busca), competencies general (Expandir a busca), competencies mental (Expandir a busca)
and competencies » and competences (Expandir a busca), and competence (Expandir a busca), of competencies (Expandir a busca)
boosting methods » boosting method (Expandir a busca), costing methods (Expandir a busca), coasting methods (Expandir a busca)
central program » dental program (Expandir a busca), centro program (Expandir a busca), cultural program (Expandir a busca)
using boosting » using rotating (Expandir a busca), using boosted (Expandir a busca), using resting (Expandir a busca)
methods python » methods action (Expandir a busca), pythons python (Expandir a busca), methods method (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Caso esteja tentando utilizar os operadores booleanos, deve escrevê-los em Letras MAIÚSCULAS: (( code AND competencies central program ) OR ( using boosting methods python programming ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( code and competencies central program ) OR ( using boosting methods python programming ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( code and competencies central program ) OR ( using boosting methods python programming ))*.