Perhaps you should try some spelling variations:
"and computation using modeling problem" » "and computations using modeling problem" (Expand search), "and computation in modeling problem" (Expand search), "and composition using modeling problem" (Expand search), "and computation using modeling problems" (Expand search), "and computation using modelling problem" (Expand search), "and computation using modelling problems" (Expand search), "and computational using modeling problem" (Expand search), "of computation using modeling problem" (Expand search), "and computation using model problem" (Expand search), "and computation using modern problem" (Expand search), "and computation using models 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: (("and computation using modeling problem") OR ("using code from python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"and computation using modeling problem\") OR (\"using code from python programming\"))".
• Removing quotes may allow a broader search: (( and computation using modeling problem ) OR ( using code from python programming )).
• Adding a wildcard symbol may retrieve word variants: (("and computation using modeling problem") OR ("using code from python programming"))*.