Perhaps you should try some spelling variations:
"using computational code clustering problem" » "and computational code clustering problem" (Expand search), "using computational model clustering problem" (Expand search), "using computational cost clustering problem" (Expand search), "using computational models clustering problem" (Expand search), "using computational code covering problem" (Expand search), "using computational co clustering problem" (Expand search), "using computational module clustering problem" (Expand search)
"using compilation on coding program" » "using combination on coding program" (Expand search), "using population on coding program" (Expand search), "using correlation on coding program" (Expand search), "using compilation of coding program" (Expand search), "using compilation an coding program" (Expand search), "using compilation and coding program" (Expand search), "using compilation on cloning program" (Expand search), "using compilation on loading program" (Expand search), "using compilation on cooling programs" (Expand search), "using compilation 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 code clustering problem\") OR (\"using compilation on coding program\"))~".
• Removing quotes may allow a broader search: (( using computational code clustering problem ) OR ( using compilation on coding program ))~.
• Adding a wildcard symbol may retrieve word variants: (("using computational code clustering problem") OR ("using compilation on coding program"))*.