Perhaps you should try some spelling variations:
"coder _ arduino coding optimization" » "coder _ arduino cooling optimization" (Expand search), "coder _ arduino modeling optimization" (Expand search), "coder _ arduino routing optimization" (Expand search), "coder _ arduino codigo optimization" (Expand search), "coder _ audio coding optimization" (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), "manim python python 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 _ arduino coding optimization\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder _ arduino coding optimization ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder _ arduino coding optimization") OR ("api python python python programming"))*.