Perhaps you should try some spelling variations:
"dung cfd code snippets" » "dung cho code snippets", "dung cua code snippets", "dung co code snippets", "dung cfd core snippets"
"cong trinh do snippets" » "cong trinh ky snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cfd code snippets") OR ("cong trinh do snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( dung cfd code snippets ) or ( cong trinh do snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung cfd code snippets") or ("cong trinh do snippets"))) or ("locating bug code snippets"))*.