Perhaps you should try some spelling variations:
"coder _ optimal precoder program" » "coder _ optimal power program" (Expand search), "coder _ optimal order program" (Expand search), "coder _ optimal price program" (Expand search), "coder _ optimal proder program" (Expand search), "coder _ optimal recovery program" (Expand search), "coder _ optimal precoce programa" (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)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder _ optimal precoder program") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder _ optimal precoder program\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder _ optimal precoder program ) OR ( api python python python programming ))*.