Perhaps you should try some spelling variations:
"and computational using linear programing" » "and computation using linear programing" (Expand search), "and computations using linear programing" (Expand search), "and computacional usinas linear programing" (Expand search), "_ computational using linear programing" (Expand search), "and computational using linear programming" (Expand search), "and computational using linear programmin" (Expand search), "and computational using linear program" (Expand search)
"using tools python python programming" » "using tools pythons python programming" (Expand search), "using tools piton python programming" (Expand search), "using tools pitons python programming" (Expand search), "using tool python python programming" (Expand search), "using tools person python programming" (Expand search), "cutting tools python python programming" (Expand search), "testing tools python python programming" (Expand search), "mining tools 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: (("and computational using linear programing") OR ("using tools python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computational using linear programing\") OR (\"using tools python python programming\"))".
• Removing quotes may allow a broader search: (( and computational using linear programing ) OR ( using tools python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and computational using linear programing") OR ("using tools python python programming"))*.