Perhaps you should try some spelling variations:
"coder propagation coder based program" » "mode propagation coder based program" (Expand search), "model propagation coder based program" (Expand search), "modes propagation coder based program" (Expand search), "coder propagation model based program" (Expand search), "coder propagation over based program" (Expand search), "coder propagation modes based program" (Expand search), "coder propagation code based program" (Expand search), "coder propagation foder based program" (Expand search), "coder propagation codec based program" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons 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: "((\"coder propagation coder based program\") OR (\"_ python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder propagation coder based program ) OR ( _ python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder propagation coder based program") OR ("_ python python python programming"))*.