Perhaps you should try some spelling variations:
"using computational complexity complex program" » "and computational complexity complex program" (Expand search), "using computational complexity simplex program" (Expand search), "using computational complexity complex programmes" (Expand search), "using computational complexity complex prograded" (Expand search)
"based combination of coding program" » "and combination of coding program" (Expand search), "dose combination of coding program" (Expand search), "based communication of coding program" (Expand search), "based combination of cloning program" (Expand search), "based combination of loading program" (Expand search), "based combination of cooling programs" (Expand search), "based combination 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: "((\"based combination of coding program\") OR (\"using computational complexity complex program\"))~".
• Removing quotes may allow a broader search: (( based combination of coding program ) OR ( using computational complexity complex program ))~.
• Adding a wildcard symbol may retrieve word variants: (("based combination of coding program") OR ("using computational complexity complex program"))*.