Perhaps you should try some spelling variations:
"based optimization using visual programming" » "and optimization using visual programming" (Expand search), "based optimization and visual programming" (Expand search), "based optimization using fetal programming" (Expand search), "based optimization using virtual programming" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("based optimization using visual programming") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"based optimization using visual programming\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( based optimization using visual programming ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("based optimization using visual programming") OR ("using coding python python programming"))*.