Perhaps you should try some spelling variations:
"coder coder variable and problem" » "coder under variable and problem" (Expand search), "coder mode variable and problem" (Expand search), "coder color variable and problem" (Expand search), "coder coder variables and problem" (Expand search), "coder coder variable _ problem" (Expand search), "coder decoder variable and problem" (Expand search), "code code variable and problem" (Expand search), "decoder codec variable and problem" (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)

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 variable and problem") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder variable and problem\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder variable and problem ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder variable and problem") OR ("on python python python programming"))*.