Perhaps you should try some spelling variations:
"coder coder with rectangular pulse" » "coder coder with rectangular pulses" (Expand search), "coder coder with rectangular plate" (Expand search), "coder coder with rectangular pdms" (Expand search), "coder coder in rectangular pulse" (Expand search), "coder coder of rectangular pulse" (Expand search), "coder coder with regular pulse" (Expand search), "coder decoder with rectangular pulse" (Expand search), "code code with rectangular pulse" (Expand search), "decoder codec with rectangular pulse" (Expand search), "coder codes with rectangular pulse" (Expand search), "coder code with rectangular pulse" (Expand search), "coder cover with rectangular pulse" (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 with rectangular pulse") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder with rectangular pulse\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder with rectangular pulse ) OR ( api python python python programming ))*.