Perhaps you should try some spelling variations:
"coder precoder and linear programming" » "coder decoder and linear programming" (Expand search), "coder recover and linear programming" (Expand search), "coder recorder and linear programming" (Expand search), "coder precoce and linear programming" (Expand search), "coder precoder and nonlinear programming" (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 precoder and linear programming") OR ("via python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder and linear programming\") OR (\"via python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder and linear programming ) OR ( via python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder and linear programming") OR ("via python python python programming"))*.