Perhaps you should try some spelling variations:
"and optimization with arduino programming" » "and optimization with arduino programmable" (Expand search), "and optimization with radio programming" (Expand search), "and optimization with learning programming" (Expand search), "and optimization and arduino programming" (Expand search), "and optimization _ arduino programming" (Expand search), "and optimization the arduino programming" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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: "((\"and optimization with arduino programming\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( and optimization with arduino programming ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and optimization with arduino programming") OR ("using coding python python programming"))*.