Perhaps you should try some spelling variations:
"coder coder block scheduling problem" » "coder coder task scheduling problem" (Expand search), "coder coder job scheduling problem" (Expand search), "coder coder based scheduling problem" (Expand search), "coder decoder block scheduling problem" (Expand search), "code code block scheduling problem" (Expand search), "decoder codec block scheduling problem" (Expand search), "coder code block scheduling problem" (Expand search), "coder power block scheduling problem" (Expand search), "coder under block scheduling problem" (Expand search)
"and python python python programming" » "and pythons python python programming" (Expand search), "and piton python python programming" (Expand search), "and pitons python python programming" (Expand search), "in python python python programming" (Expand search), "on python python python programming" (Expand search), "api python 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 coder block scheduling problem\") OR (\"and python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder block scheduling problem ) OR ( and python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder block scheduling problem") OR ("and python python python programming"))*.