Perhaps you should try some spelling variations:
"coder precoder leduino radio programming" » "coder precoder leduino radio programas" (Expand search), "coder precoder leduino and programming" (Expand search), "coder precoder leduino to programming" (Expand search), "coder decoder leduino radio programming" (Expand search), "coder precoder reduzido radio 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 precoder leduino radio programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder leduino radio programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder leduino radio programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder leduino radio programming") OR ("api python python python programming"))*.