Perhaps you should try some spelling variations:
"coder coder frequency _ programming" » "coder power frequency _ programming" (Expand search), "coder lower frequency _ programming" (Expand search), "coder over frequency _ programming" (Expand search), "coder decoder frequency _ programming" (Expand search), "code code frequency _ programming" (Expand search), "decoder codec frequency _ 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)

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 frequency _ programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder frequency _ programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder frequency _ programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder frequency _ programming") OR ("api python python python programming"))*.