Perhaps you should try some spelling variations:
"coder coder matematica linear programming" » "coder coder matematicos lineares programming" (Expand search), "coder coder matematica livro programming" (Expand search), "coder coder matematica livros programming" (Expand search), "coder modelo matematica linear programming" (Expand search), "coder cancer matematica linear programming" (Expand search), "coder poder matematicos linear programming" (Expand search), "coder decoder matematica linear programming" (Expand search), "code code matematica linear programming" (Expand search), "decoder codec matematica linear programming" (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 matematica linear programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder matematica linear programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder matematica linear programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder matematica linear programming") OR ("on python python python programming"))*.