Perhaps you should try some spelling variations:
"using computational testing modelling problem" » "using compositional testing modelling problem" (Expand search), "using computational tests modelling problem" (Expand search), "using computational tinking modelling problem" (Expand search), "and computational testing modelling problem" (Expand search), "using computational testing modeling problem" (Expand search), "using computational teaching modelling problem" (Expand search), "using computational using modelling problem" (Expand search), "using computational testing modelling problems" (Expand search), "using computational testing modeling problems" (Expand search), "using computational testing covering problem" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("using computational testing modelling problem") OR ("using code from python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"using computational testing modelling problem\") OR (\"using code from python programming\"))".
• Removing quotes may allow a broader search: (( using computational testing modelling problem ) OR ( using code from python programming )).
• Adding a wildcard symbol may retrieve word variants: (("using computational testing modelling problem") OR ("using code from python programming"))*.