Perhaps you should try some spelling variations:
"variance optimization in python programming" » "surface optimization in python programming" (Expand search), "engine optimization in python programming" (Expand search), "value optimization in python programming" (Expand search), "variance optimization and python programming" (Expand search), "variance optimization _ python programming" (Expand search)
"based convolutional using coding program" » "and convolutional using coding program" (Expand search), "deep convolutional using coding program" (Expand search), "2d convolutional using coding program" (Expand search), "based convolutional ring coding program" (Expand search), "based convolutional coding coding program" (Expand search), "based convolutional long coding program" (Expand search), "based convolutional using cloning program" (Expand search), "based convolutional using loading program" (Expand search), "based convolutional using cooling programs" (Expand search), "based convolutional using coping program" (Expand search), "based convolutional using coating program" (Expand search), "based convolutional using cooking 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: "((\"based convolutional using coding program\") OR (\"variance optimization in python programming\"))~".
• Removing quotes may allow a broader search: (( based convolutional using coding program ) OR ( variance optimization in python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based convolutional using coding program") OR ("variance optimization in python programming"))*.