Perhaps you should try some spelling variations:
"improving discrete-valued functions" » "improving discrete-value functions" (Expand Search), "improving discrete-values functions" (Expand Search), "improving discrete-valued function" (Expand Search)
"improviding discrete-valued functions" » "improviding discrete-value functions" (Expand Search), "improviding discrete-values functions" (Expand Search), "improviding discrete-valued function" (Expand Search), "providing discrete-valued functions" (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: "((\"improving discrete-valued functions\") OR (\"improviding discrete-valued functions\"))~".
• Removing quotes may allow a broader search: (( improving discrete-valued functions ) OR ( improviding discrete-valued functions ))~.
• Adding a wildcard symbol may retrieve word variants: (("improving discrete-valued functions") OR ("improviding discrete-valued functions"))*.