Perhaps you should try some spelling variations:
"coder coder using diffusion problems" » "coder coder using diffusion problem" (Expand search), "coder coder using diffusion process" (Expand search), "coder decoder using diffusion problems" (Expand search), "code code using diffusion problems" (Expand search), "decoder codec using diffusion problems" (Expand search), "coder coders using diffusion problems" (Expand search), "coder cover using diffusion problems" (Expand search), "coder code using diffusion 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 using diffusion problems") OR ("monty python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder using diffusion problems\") OR (\"monty python python python programming\"))".
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• Adding a wildcard symbol may retrieve word variants: (("coder coder using diffusion problems") OR ("monty python python python programming"))*.