Perhaps you should try some spelling variations:
"coder coder processing experimental program" » "coder coder processo experimental program" (Expand search), "coder coder processes experimental program" (Expand search), "coder coder processual experimental program" (Expand search), "coder coder processing experimental protocol" (Expand search), "coder cider processing experimental program" (Expand search), "coder powder processing experimental program" (Expand search), "coder power processing experimental program" (Expand search), "coder decoder processing experimental program" (Expand search), "code code processing experimental program" (Expand search), "decoder codec processing experimental program" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ python programming" (Expand search)

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