Perhaps you should try some spelling variations:
"coder decoder arduino based programming" » "coder decoder arduino and programming" (Expand search), "coder decoder arduino based program" (Expand search), "coder decoder arduino cone programming" (Expand search), "encoder decoder arduino based programming" (Expand search), "video decoder arduino based programming" (Expand search), "coder decoder arduino board programming" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python 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 decoder arduino based programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder arduino based programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder arduino based programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder arduino based programming") OR ("api python python python programming"))*.