Perhaps you should try some spelling variations:
"advanced populations using computer program" » "advanced computations using computer program" (Expand search), "adapted populations using computer program" (Expand search), "advanced modulation using computer program" (Expand search), "advanced formulations using computer program" (Expand search), "advanced populations and computer program" (Expand search)
"using models from python programming" » "ising models from python programming" (Expand search), "using model from python programming" (Expand search), "nursing models from python programming" (Expand search), "using models from pathogen programming" (Expand search), "using models from anthony 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 computer program") OR ("using models from python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"advanced populations using computer program\") OR (\"using models from python programming\"))".
• Removing quotes may allow a broader search: (( advanced populations using computer program ) OR ( using models from python programming )).
• Adding a wildcard symbol may retrieve word variants: (("advanced populations using computer program") OR ("using models from python programming"))*.