Perhaps you should try some spelling variations:
"coder coder on string problems" » "coder coder on string problem" (Expand search), "coder coder on sharing problems" (Expand search), "coder coder on sorting problems" (Expand search), "coder decoder on string problems" (Expand search), "code code on string problems" (Expand search), "decoder codec on string problems" (Expand search), "coder coder in string problems" (Expand search), "coder coder ten string problems" (Expand search), "coder code on string problems" (Expand search), "coder codes on string problems" (Expand search), "coder powder on string problems" (Expand search)
"monty python python python programming" » "monty pythons python python programming" (Expand search), "monty piton python python programming" (Expand search), "monty 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 on string problems") OR ("monty python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder on string problems\") OR (\"monty python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder on string problems ) OR ( monty python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder on string problems") OR ("monty python python python programming"))*.