Perhaps you should try some spelling variations:
"based implementation in loading problem" » "and implementation in loading problem" (Expand search), "based implementation and loading problem" (Expand search), "based implementation of loading problem" (Expand search), "based implementation in routing problem" (Expand search), "based implementation in planning problem" (Expand search), "based implementation in leading problem" (Expand search), "based implementation ii loading problem" (Expand search), "based implementation i loading problem" (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: "((\"based implementation in loading problem\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( based implementation in loading problem ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("based implementation in loading problem") OR ("using coding python python programming"))*.