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