Talvez deva tentar algumas variações de ortografia:
unstructured program » structured program (Expandir a busca), structured programs (Expandir a busca), unstruct program (Expandir a busca)
using unstructured » in unstructured (Expandir a busca), using structural (Expandir a busca)
based populations » based population (Expandir a busca), base populations (Expandir a busca), aged populations (Expandir a busca)
populations using » formulations using (Expandir a busca), populations and (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.

• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( based populations using unstructured program ) OR ( using coding python python programming ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( based populations using unstructured program ) OR ( using coding python python programming ))*.