Perhaps you should try some spelling variations:
"coder programacao python arduino programmable" » "calor programacao python arduino programmable" (Expand search), "ver programacao python arduino programmable" (Expand search), "des programacao python arduino programmable" (Expand search)
"using opencv python python programming" » "using opencv pythons python programming" (Expand search), "using opencv piton python programming" (Expand search), "using opencv pitons python programming" (Expand search), "using opencl python python programming" (Expand search), "using open python python programming" (Expand search), "usando opencv python python programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder programacao python arduino programmable\") OR (\"using opencv python python programming\"))~".
• Removing quotes may allow a broader search: (( coder programacao python arduino programmable ) OR ( using opencv python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder programacao python arduino programmable") OR ("using opencv python python programming"))*.