Perhaps you should try some spelling variations:
"coder coder switch machine problem" » "coder coder switch matching problem" (Expand search), "coder coder switch teaching problem" (Expand search), "coder coder switch teaching problems" (Expand search), "coder power switch machine problem" (Expand search), "coder closed switch machine problem" (Expand search), "coder code switched machine problem" (Expand search), "coder decoder switch machine problem" (Expand search), "code code switch machine problem" (Expand search), "decoder codec switch machine 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 switch machine problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder switch machine problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder switch machine problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder switch machine problem") OR ("_ python python python programming"))*.