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