Perhaps you should try some spelling variations:
coder modulation » code modulation (Expand search), coded modulation (Expand search), power modulation (Expand search)
modulation and » modulation in (Expand search), modulation of (Expand search)
and processing » food processing (Expand search), and process (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
coder coder » coder decoder (Expand search), code code (Expand search), decoder codec (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( coder coder modulation AND processing ) OR ( python python python python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( coder coder modulation and processing ) OR ( python python python python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( coder coder modulation and processing ) OR ( python python python python programming ))*.