Perhaps you should try some spelling variations:
"coder coder edf scheduling problem" » "coder coder edd scheduling problem" (Expand search), "coder coder self scheduling problem" (Expand search), "coder coder of scheduling problem" (Expand search), "coder decoder edf scheduling problem" (Expand search), "code code edf scheduling problem" (Expand search), "decoder codec edf scheduling problem" (Expand search)
"via python python python programming" » "via pythons python python programming" (Expand search), "via piton python python programming" (Expand search), "via pitons python python programming" (Expand search), "in python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder edf scheduling problem") OR ("via python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder edf scheduling problem\") OR (\"via python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder edf scheduling problem ) OR ( via python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder edf scheduling problem") OR ("via python python python programming"))*.