Perhaps you should try some spelling variations:
"coder precoder sample problem program" » "coder precoder sample program program" (Expand search), "coder precoder sample projovem programa" (Expand search), "coder precoder sample program programa" (Expand search), "coder decoder sample problem program" (Expand search), "coder precoder complex problem program" (Expand search), "coder precoder scale problem program" (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 precoder sample problem program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder sample problem program\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder sample problem program ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder sample problem program") OR ("api python python python programming"))*.