Perhaps you should try some spelling variations:
"coder coder continuously variable problem" » "coder under continuous variable problem" (Expand search), "coder of continuously variable problem" (Expand search), "coder are continuously variable problem" (Expand search), "coder coder continuously variable probit" (Expand search), "coder coder continuously variable power" (Expand search), "coder decoder continuously variable problem" (Expand search), "code code continuously variable problem" (Expand search), "decoder codec continuously variable 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.

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