Perhaps you should try some spelling variations:
"coder coder string detection problem" » "coder coder string selection problem" (Expand search), "coder coder string detection program" (Expand search), "coder coder string demarcation problem" (Expand search), "coder coder ring detection problem" (Expand search), "coder coder stripping detection problem" (Expand search), "coder coder marking detection problem" (Expand search), "coder cordel string detection problem" (Expand search), "coder closed string detection problem" (Expand search), "coder modelo string detection problem" (Expand search), "coder decoder string detection problem" (Expand search), "code code string detection problem" (Expand search), "decoder codec string detection 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 string detection problem") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder string detection problem\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder string detection problem ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder string detection problem") OR ("_ python python python programming"))*.