Perhaps you should try some spelling variations:
"coder coder decoder linear programming" » "coder coder degrader linear programming" (Expand search), "coder coder become linear programming" (Expand search), "coder coder encode linear programming" (Expand search), "coder encoder decoder linear programming" (Expand search), "code code decoder linear programming" (Expand search), "decoder codec decoder linear programming" (Expand search), "codesc poder decoder linear programming" (Expand search)
"spi on python python programming" » "spi on pythons python programming" (Expand search), "spi on piton python programming" (Expand search), "spi on pitons python programming" (Expand search), "spi in python python programming" (Expand search), "spi of python python programming" (Expand search), "spi _ python python programming" (Expand search), "ipi on python python programming" (Expand search), "cpi on 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 decoder linear programming") OR ("spi on python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder decoder linear programming\") OR (\"spi on python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder decoder linear programming ) OR ( spi on python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder decoder linear programming") OR ("spi on python python programming"))*.