Perhaps you should try some spelling variations:
"coder xcode java microcontroller arduino" » "coder xcode java microcontrolador arduino" (Expand search), "coder xcode avr microcontroller arduino" (Expand search), "coder xcode arm microcontroller arduino" (Expand search), "coder xcode and microcontroller arduino" (Expand search), "code code java microcontroller arduino" (Expand search), "coder decoder java microcontroller arduino" (Expand search), "coder codes java microcontroller arduino" (Expand search)
"api pitoni python python programming" » "api pitons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pythons python python programming" (Expand search), "api pitoni pythons python programming" (Expand search), "api pitoni piton python programming" (Expand search), "api pitoni pitons python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder xcode java microcontroller arduino\") OR (\"api pitoni python python programming\"))~".
• Removing quotes may allow a broader search: (( coder xcode java microcontroller arduino ) OR ( api pitoni python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder xcode java microcontroller arduino") OR ("api pitoni python python programming"))*.