Perhaps you should try some spelling variations:
"coder coder exponential function problem" » "coder power exponential function problem" (Expand search), "coder order exponential function problem" (Expand search), "coder under exponential function problem" (Expand search), "coder coder exponential function problems" (Expand search), "coder coder exponential functions problems" (Expand search), "coder coder exponential functional problems" (Expand search), "coder decoder exponential function problem" (Expand search), "code code exponential function problem" (Expand search), "decoder codec exponential function problem" (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 coder exponential function problem\") OR (\"_ python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder exponential function problem ) OR ( _ python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder exponential function problem") OR ("_ python python python programming"))*.