Perhaps you should try some spelling variations:
component contratos » component context (Expand search), components constraints (Expand search), componentes construtivos (Expand search)
contratos programa » contrato programa (Expand search)
using nested » using boosted (Expand search), using next (Expand search)
nested piton » nested within (Expand search), nested in (Expand search), nested petri (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (Expand search)

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

• Removing quotes may allow a broader search: (( coder AND component contratos programa ) OR ( using nested piton python programming ))~.