Perhaps you should try some spelling variations:
"and computational using constraint programming" » "and computation using constraint programming" (Expand search), "and computations using constraint programming" (Expand search), "and computacional usinas constraint programming" (Expand search), "_ computational using constraint programming" (Expand search), "and computational using constrained programming" (Expand search), "and computational and constraint programming" (Expand search)
"using code from python programming" » "using code from pathogen programming" (Expand search), "using code from anthony programming" (Expand search), "using cone from python programming" (Expand search), "using co from python programming" (Expand search), "using co2 from python programming" (Expand search), "using code form 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: "((\"and computational using constraint programming\") OR (\"using code from python programming\"))~".
• Removing quotes may allow a broader search: (( and computational using constraint programming ) OR ( using code from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and computational using constraint programming") OR ("using code from python programming"))*.