Perhaps you should try some spelling variations:
"advanced populations using complex program" » "advanced computations using complex program" (Expand search), "adapted populations using complex program" (Expand search), "advanced modulation using complex program" (Expand search), "advanced formulations using complex program" (Expand search), "advanced populations and complex program" (Expand search), "advanced populations using simplex program" (Expand search), "advanced populations using complex programmes" (Expand search), "advanced populations using complex prograded" (Expand search), "advanced populations housing complex program" (Expand search), "advanced populations using computer program" (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: (("advanced populations using complex program") OR ("using code from python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced populations using complex program\") OR (\"using code from python programming\"))*".
• Removing quotes may allow a broader search: (( advanced populations using complex program ) OR ( using code from python programming ))*.