Perhaps you should try some spelling variations:
"coder computation _ coding problems" » "modern computation _ coding problems" (Expand search), "core computation _ coding problems" (Expand search), "color computation _ coding problems" (Expand search), "coder computation _ loading problems" (Expand search), "coder computation _ counting problems" (Expand search), "coder computation _ covering problems" (Expand search)
"via python python python programming" » "via pythons python python programming" (Expand search), "via piton python python programming" (Expand search), "via pitons python python programming" (Expand search), "in python 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 computation _ coding problems") OR ("via python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder computation _ coding problems\") OR (\"via python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder computation _ coding problems ) OR ( via python python python programming ))*.