Perhaps you should try some spelling variations:
"coder decoder wave structure program" » "coder decoder wave structured program" (Expand search), "coder decoder wave structured programs" (Expand search), "coder decoder wave destructive program" (Expand search), "coder decoder age structure program" (Expand search), "coder decoder bone structure program" (Expand search), "coder decoder edge structure program" (Expand search), "encoder decoder wave structure 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 decoder wave structure program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder wave structure program\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder wave structure program ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder wave structure program") OR ("api python python python programming"))*.