Perhaps you should try some spelling variations:
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ python python python programming" (Expand search)
"coder coder of signal processing" » "coder decoder of signal processing" (Expand search), "code code of signal processing" (Expand search), "decoder codec of signal processing" (Expand search), "coder coder of signs processing" (Expand search), "coder code of signal processing" (Expand search), "coder codes of signal processing" (Expand search), "coder codex of signal processing" (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 of signal processing") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder of signal processing\") OR (\"in python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder of signal processing ) OR ( in python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder of signal processing") OR ("in python python python programming"))*.