Perhaps you should try some spelling variations:
"using computational tool routing problem" » "and computational tool routing problem" (Expand search), "using computational biology routing problem" (Expand search), "using computational tool coating problem" (Expand search), "using computational tool computing problem" (Expand search), "using computational patrol routing problem" (Expand search)
"using population in coding program" » "aging population in coding program" (Expand search), "ageing population in coding program" (Expand search), "young population in coding program" (Expand search), "using population in cloning program" (Expand search), "using population in loading program" (Expand search), "using population in cooling programs" (Expand search), "using population on coding program" (Expand search), "using population in decoding program" (Expand search), "using population non coding program" (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: "((\"using computational tool routing problem\") OR (\"using population in coding program\"))~".
• Removing quotes may allow a broader search: (( using computational tool routing problem ) OR ( using population in coding program ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational tool routing problem") OR ("using population in coding program"))*.