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