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