Perhaps you should try some spelling variations:
"using computational complexity computer program" » "using computational complexity complex program" (Expand search), "using computational complexity computacao program" (Expand search), "using computational complexity competences program" (Expand search), "and computational complexity computer program" (Expand search)
"code completion non coding program" » "course completion non coding program" (Expand search), "and completion non coding program" (Expand search), "the completion non coding program" (Expand search), "code completion on coding program" (Expand search), "code completion of coding program" (Expand search), "code completion in coding program" (Expand search), "code completion non cloning program" (Expand search), "code completion non loading program" (Expand search), "code completion non cooling programs" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("code completion non coding program") OR ("using computational complexity computer program"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"code completion non coding program\") OR (\"using computational complexity computer program\"))*".
• Removing quotes may allow a broader search: (( code completion non coding program ) OR ( using computational complexity computer program ))*.