Perhaps you should try some spelling variations:
"coder precoder on arduino programming" » "coder precoder on arduino programmable" (Expand search), "coder precoder on radio programming" (Expand search), "coder precoder on learning programming" (Expand search), "coder decoder on arduino programming" (Expand search), "coder precoder _ arduino programming" (Expand search), "coder precoder hp arduino programming" (Expand search), "coder preceded on arduino programming" (Expand search), "coder precoder con arduino programming" (Expand search), "coder precoder an arduino programming" (Expand search), "coder precoder of arduino programming" (Expand search)
"api in python python programming" » "api in pythons python programming" (Expand search), "api in piton python programming" (Expand search), "api in pitons python programming" (Expand search), "api _ python python programming" (Expand search), "api an python python programming" (Expand search), "fpi in python python programming" (Expand search), "gpi in 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 on arduino programming") OR ("api in python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder on arduino programming\") OR (\"api in python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder on arduino programming ) OR ( api in python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder on arduino programming") OR ("api in python python programming"))*.