Perhaps you should try some spelling variations:
componente convex » componente conexa (Expand search), componente chave (Expand search), componente confiavel (Expand search)
tree componente » tree component (Expand search), tree components (Expand search), tres componentes (Expand search)
sampling pitons » sampling positions (Expand search), sampling plans (Expand search), sampling plots (Expand search)
convex program » convex programs (Expand search), conviver program (Expand search), softex program (Expand search)
sinus sampling » gibbs sampling (Expand search), soils sampling (Expand search)
coder tree » modern tree (Expand search), under tree (Expand search), poder tres (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( coder tree componente convex program ) OR ( sinus sampling pitons python programming ))~.