Perhaps you should try some spelling variations:
"coder coder digital control problem" » "coder coder digital control problems" (Expand search), "coder coder digital control program" (Expand search), "coder code digital control problem" (Expand search), "coder modern digital control problem" (Expand search), "coder model digital control problem" (Expand search), "coder decoder digital control problem" (Expand search), "code code digital control problem" (Expand search), "decoder codec digital control problem" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder digital control problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder digital control problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder digital control problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder digital control problem") OR ("api python python python programming"))*.