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