Perhaps you should try some spelling variations:
"advanced computation using computer program" » "advanced computations using computer program" (Expand search), "advanced computational using computer program" (Expand search), "advance computational using computer program" (Expand search), "advanced computation in computer program" (Expand search), "advanced composition using computer program" (Expand search)
"pricing models from python programming" » "pricing model from python programming" (Expand search), "pricing models from pathogen programming" (Expand search), "pricing models from anthony 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: "((\"advanced computation using computer program\") OR (\"pricing models from python programming\"))~".
• Removing quotes may allow a broader search: (( advanced computation using computer program ) OR ( pricing models from python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced computation using computer program") OR ("pricing models from python programming"))*.