Perhaps you should try some spelling variations:
"coder precoder wave signals programming" » "coder precoder wave single programming" (Expand search), "coder precoder wave grignard programming" (Expand search), "coder precoder wave binary programming" (Expand search), "coder decoder wave signals programming" (Expand search), "coder recovery wave signals programming" (Expand search), "coder precoder and signals programming" (Expand search), "coder precoder the signals programming" (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 wave signals programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder wave signals programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder wave signals programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder wave signals programming") OR ("api python python python programming"))*.