Perhaps you should try some spelling variations:
"coder coder modeling and problem" » "coder cover modeling and problem" (Expand search), "coder cover modelling and problem" (Expand search), "coder order modeling and problem" (Expand search), "coder decoder modeling and problem" (Expand search), "code code modeling and problem" (Expand search), "decoder codec modeling and 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.

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