Perhaps you should try some spelling variations:
"coder solution in arduino programming" » "coder solution in arduino programmable" (Expand search), "coder solution in radio programming" (Expand search), "coder solution in learning programming" (Expand search), "code solution in arduino programming" (Expand search), "copper solution in arduino programming" (Expand search), "powder solution in arduino programming" (Expand search), "coder solutions in arduino programming" (Expand search), "coder solution and arduino programming" (Expand search), "coder solution _ arduino programming" (Expand search), "coder solution an arduino programming" (Expand search), "coder solution via arduino programming" (Expand search)
"time optimization python python programming" » "time optimization method python programming" (Expand search), "time optimization option python programming" (Expand search), "time optimization methods python programming" (Expand search), "the optimization python python programming" (Expand search), "engine optimization python python programming" (Expand search), "shape optimization python python programming" (Expand search), "time optimization pythons python programming" (Expand search), "time optimization piton python programming" (Expand search), "time optimization pitons python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder solution in arduino programming") OR ("time optimization python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder solution in arduino programming\") OR (\"time optimization python python programming\"))*".
• Removing quotes may allow a broader search: (( coder solution in arduino programming ) OR ( time optimization python python programming ))*.