Perhaps you should try some spelling variations:
"variance optimization python computer program" » "surface optimization python computer program" (Expand search), "engine optimization python computer program" (Expand search), "value optimization python computer program" (Expand search), "variance optimization method computer program" (Expand search), "variance optimization option computer program" (Expand search), "variance optimization methods computer program" (Expand search)
"advanced simulation _ computing program" » "advanced modulation _ computing program" (Expand search), "advanced calculation _ computing program" (Expand search), "advanced simulation _ consulting program" (Expand search), "advanced simulation _ computador program" (Expand search), "advanced simulation _ computer programs" (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 simulation _ computing program\") OR (\"variance optimization python computer program\"))~".
• Removing quotes may allow a broader search: (( advanced simulation _ computing program ) OR ( variance optimization python computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("advanced simulation _ computing program") OR ("variance optimization python computer program"))*.