Perhaps you should try some spelling variations:
"by imputation using multiobjective programming" » "by imputation using objective programming" (Expand search), "by imputation in multiobjective programming" (Expand search), "by imputation _ multiobjective programming" (Expand search), "by computation using multiobjective programming" (Expand search), "by computations using multiobjective programming" (Expand search), "of imputation using multiobjective programming" (Expand search), "by imitation using multiobjective programming" (Expand search), "_ imputation using multiobjective 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: (("by imputation using multiobjective programming") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"by imputation using multiobjective programming\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( by imputation using multiobjective programming ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("by imputation using multiobjective programming") OR ("using coding python python programming"))*.