Perhaps you should try some spelling variations:
"based compression and linear programming" » "band compression and linear programming" (Expand search), "based impression and linear programming" (Expand search), "heated compression and linear programming" (Expand search), "based comprehension and linear programming" (Expand search), "based compression of linear programming" (Expand search), "based compression and nonlinear programming" (Expand search)
"using codigo python python programming" » "using codigo pythons python programming" (Expand search), "using codigo piton python programming" (Expand search), "using codigo pitons python programming" (Expand search), "using indigo python python programming" (Expand search), "using coding python python programming" (Expand search), "using codium 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: "((\"based compression and linear programming\") OR (\"using codigo python python programming\"))~".
• Removing quotes may allow a broader search: (( based compression and linear programming ) OR ( using codigo python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based compression and linear programming") OR ("using codigo python python programming"))*.