Perhaps you should try some spelling variations:
"joint reresourcesssssssssssssssssss–channel coding" » "joint reresourcessssssssssssssssssss–channel coding" (Expand Search), "joint rereresourcesssssssssssssssssss–channel coding" (Expand Search)
"point source–channel coding" » "point sources–channel coding" (Expand Search), "point resource–channel coding" (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: "((\"joint reresourcesssssssssssssssssss–channel coding\") OR (\"point source–channel coding\"))~".
• Removing quotes may allow a broader search: (( joint reresourcesssssssssssssssssss–channel coding ) OR ( point source–channel coding ))~.
• Adding a wildcard symbol may retrieve word variants: (("joint reresourcesssssssssssssssssss–channel coding") OR ("point source–channel coding"))*.