Perhaps you should try some spelling variations:
"coder coder variable in problem" » "coder under variable in problem" (Expand search), "coder color variable in problem" (Expand search), "coder mode variable in problem" (Expand search), "coder decoder variable in problem" (Expand search), "code code variable in problem" (Expand search), "decoder codec variable in problem" (Expand search)
"api pitons python python programming" » "api pitons pythons python programming" (Expand search), "api pitons piton python programming" (Expand search), "api pitons pytm python programming" (Expand search), "api citons python python programming" (Expand search), "api pitoni python python programming" (Expand search), "api pitoes 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 variable in problem") OR ("api pitons python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder variable in problem\") OR (\"api pitons python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder variable in problem ) OR ( api pitons python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder variable in problem") OR ("api pitons python python programming"))*.