Perhaps you should try some spelling variations:
"coder coder using frequency modulation" » "coder coder single frequency modulation" (Expand search), "coder coder feeding frequency modulation" (Expand search), "coder coder grazing frequency modulation" (Expand search), "coder decoder using frequency modulation" (Expand search), "code code using frequency modulation" (Expand search), "decoder codec using frequency modulation" (Expand search), "coder coders using frequency modulation" (Expand search), "coder cover using frequency modulation" (Expand search), "coder code using frequency modulation" (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 using frequency modulation") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder using frequency modulation\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder using frequency modulation ) OR ( api python python python programming ))*.