Perhaps you should try some spelling variations:
"trinh cfd code snippets" » "trinh cad code snippets", "trinh co code snippets", "trinh cau code snippets", "trinh cfd core snippets", "trinh cfd code slippers"
"dung dung trong snippets" » "duong dung trong snippets", "ung dung trong snippets", "dung ung trong snippets", "dung dung trong slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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

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