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)
"based visualization _ coding program" » "based virtualization _ coding program" (Expand search), "and visualization _ coding program" (Expand search), "data visualization _ coding program" (Expand search), "based visualization _ cloning program" (Expand search), "based visualization _ loading program" (Expand search), "based visualization _ cooling 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: "((\"based visualization _ coding program\") OR (\"variance optimization python computer program\"))~".
• Removing quotes may allow a broader search: (( based visualization _ coding program ) OR ( variance optimization python computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("based visualization _ coding program") OR ("variance optimization python computer program"))*.