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