Perhaps you should try some spelling variations:
"coder coder time frequency data" » "coder coder the frequency data" (Expand search), "coder coder time frequency and" (Expand search), "coder coder time frequency domain" (Expand search), "coder decoder time frequency data" (Expand search), "code code time frequency data" (Expand search), "decoder codec time frequency data" (Expand search), "coder cover time frequency data" (Expand search), "coder modern time frequency data" (Expand search), "coder over time frequency data" (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 time frequency data") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder time frequency data\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder time frequency data ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder time frequency data") OR ("api python python python programming"))*.