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