Perhaps you should try some spelling variations:
"using compression sparse coding problems" » "using compressing sparse coding problems" (Expand search), "using compression case coding problems" (Expand search), "using compression espace coding problems" (Expand search), "during compression sparse coding problems" (Expand search), "using compressive sparse coding problems" (Expand search), "locking compression sparse coding problems" (Expand search), "using compression sparse loading problems" (Expand search), "using compression sparse counting problems" (Expand search), "using compression sparse covering problems" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python python programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using compression sparse coding problems\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( using compression sparse coding problems ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("using compression sparse coding problems") OR ("using coding python python programming"))*.