Perhaps you should try some spelling variations:
"and optimization in subsampling program" » "and optimization in sampling program" (Expand search), "and optimization and subsampling program" (Expand search), "and optimization _ subsampling program" (Expand search), "and optimization using subsampling program" (Expand search), "and optimization the subsampling program" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python python 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: "((\"and optimization in subsampling program\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( and optimization in subsampling program ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and optimization in subsampling program") OR ("using coding python python programming"))*.