Perhaps you should try some spelling variations:
"and optimization based precoder program" » "and optimization and precoder program" (Expand search), "and optimization based proder program" (Expand search), "and optimization based recovery program" (Expand search), "and optimization based precoce programa" (Expand search), "and optimization based decoder program" (Expand search), "and optimization based decoders 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 based precoder program\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( and optimization based precoder program ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("and optimization based precoder program") OR ("using coding python python programming"))*.