Perhaps you should try some spelling variations:
"coder precoding _ programming arduino" » "coder precoding _ programacao arduino" (Expand search), "coder precoding _ programming adult" (Expand search), "coder precoding _ programavel arduino" (Expand search), "coherent precoding _ programming arduino" (Expand search), "linear precoding _ programming arduino" (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), "rpa python 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 precoding _ programming arduino") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoding _ programming arduino\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoding _ programming arduino ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoding _ programming arduino") OR ("api python python python programming"))*.