Perhaps you should try some spelling variations:
"under compression using linear programing" » "and compression using linear programing" (Expand search), "in compression using linear programing" (Expand search), "under compression in linear programing" (Expand search), "under expression using linear programing" (Expand search), "under compression molding linear programing" (Expand search), "under compression using linear programming" (Expand search), "under compression using linear programmin" (Expand search), "under compression using linear program" (Expand search)
"using python python python programming" » "using pythons python python programming" (Expand search), "using piton python python programming" (Expand search), "using pitons python python programming" (Expand search), "usando python 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"under compression using linear programing\") OR (\"using python python python programming\"))~".
• Removing quotes may allow a broader search: (( under compression using linear programing ) OR ( using python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("under compression using linear programing") OR ("using python python python programming"))*.