Perhaps you should try some spelling variations:
"variance optimization python python programming" » "surface optimization python python programming" (Expand search), "engine optimization python python programming" (Expand search), "value optimization python python programming" (Expand search), "variance optimization method python programming" (Expand search), "variance optimization option python programming" (Expand search), "variance optimization methods python programming" (Expand search), "variance optimization pythons python programming" (Expand search), "variance optimization piton python programming" (Expand search), "variance optimization pitons python programming" (Expand search)
"coder resolution and sampling program" » "model resolution and sampling program" (Expand search), "cade resolution and sampling program" (Expand search), "coder solution and sampling program" (Expand search), "coder resolution and labeling program" (Expand search), "coder resolution and smoking program" (Expand search), "coder resolution and jumping program" (Expand search), "coder resolution _ sampling program" (Expand search), "coder resolution and sample program" (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: "((\"coder resolution and sampling program\") OR (\"variance optimization python python programming\"))~".
• Removing quotes may allow a broader search: (( coder resolution and sampling program ) OR ( variance optimization python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder resolution and sampling program") OR ("variance optimization python python programming"))*.