Perhaps you should try some spelling variations:
"coder coder en integer programming" » "coder coder en linear programming" (Expand search), "coder decoder en integer programming" (Expand search), "code code en integer programming" (Expand search), "decoder codec en integer programming" (Expand search), "coder coder an integer programming" (Expand search), "coder coder of integer programming" (Expand search), "coder poder en integer programming" (Expand search), "coder code an integer programming" (Expand search), "coder aider en integer programming" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ 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 en integer programming") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder en integer programming\") OR (\"_ python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder en integer programming ) OR ( _ python python python programming ))*.