Perhaps you should try some spelling variations:
"trinh cad code snippets" » "trinh cau code snippets", "trinh cac code snippets", "trinh cam code snippets", "trinh cfd code snippets", "trinh cad model snippets"
"dung hung code snippets" » "dung chung code snippets", "dung nhung code snippets", "dung huong code snippets", "dung bug code snippets"
"locating bug core snippets" » "locating bug 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 cad code snippets") or ("dung hung code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cad code snippets") OR ("dung hung code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trinh cad code snippets ) or ( dung hung code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cad code snippets") or ("dung hung code snippets"))) or ("locating bug core snippets"))*.