Perhaps you should try some spelling variations:
"coder _ propagation algorithm functions" » "coder _ approximation algorithm functions" (Expand search), "coder _ projections algorithm functions" (Expand search), "coder _ approximation algorithms functions" (Expand search), "coder _ propagation algorithmic functions" (Expand search), "coder _ propagation algorithms functional" (Expand search), "coder _ propagation algorithm friction" (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 _ propagation algorithm functions") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder _ propagation algorithm functions\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder _ propagation algorithm functions ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder _ propagation algorithm functions") OR ("api python python python programming"))*.