Perhaps you should try some spelling variations:
"coder precoder scheme ddr program" » "coder precoding scheme ddr program" (Expand search), "coder decoder scheme ddr program" (Expand search), "coder precoder scheme r program" (Expand search), "coder precoder scheme ladder program" (Expand search), "coder precoder scheme year program" (Expand search), "coder precoder scheme doi program" (Expand search), "coder precoder scheme order 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 scheme ddr program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder scheme ddr program\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder scheme ddr program ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder scheme ddr program") OR ("api python python python programming"))*.