Perhaps you should try some spelling variations:
"using computational complexity computer program" » "and computational complexity computer program" (Expand search), "using computational complexity complex program" (Expand search), "using computational complexity computacao program" (Expand search), "using computational complexity competences program" (Expand search)
"code completion of coding program" » "course completion of coding program" (Expand search), "and completion of coding program" (Expand search), "the completion of coding program" (Expand search), "code completion of cloning program" (Expand search), "code completion of loading program" (Expand search), "code completion of cooling programs" (Expand search), "code complication of coding program" (Expand search), "code composition of coding program" (Expand search), "code computation of coding program" (Expand search), "code completion 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: "((\"code completion of coding program\") OR (\"using computational complexity computer program\"))~".
• Removing quotes may allow a broader search: (( code completion of coding program ) OR ( using computational complexity computer program ))~.
• Adding a wildcard symbol may retrieve word variants: (("code completion of coding program") OR ("using computational complexity computer program"))*.