Perhaps you should try some spelling variations:
"coder model computer kepler problem" » "coder model computer center problem" (Expand search), "coder model computer applied problem" (Expand search), "coder model computer coupled problem" (Expand search), "coder vhdl computer kepler problem" (Expand search), "cover model computer kepler problem" (Expand search), "decoder model computer kepler problem" (Expand search), "copper model computer kepler 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 model computer kepler problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder model computer kepler problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder model computer kepler problem ) OR ( api python python python programming ))*.