Perhaps you should try some spelling variations:
"coder coder wavelet based program" » "coder mother wavelet based program" (Expand search), "coder modelo wavelet based program" (Expand search), "coder redes wavelet based program" (Expand search), "coder decoder wavelet based program" (Expand search), "code code wavelet based program" (Expand search), "decoder codec wavelet based 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)

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

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