Perhaps you should try some spelling variations:
"trinh lap den snippets" » "trinh luat den snippets", "trinh luan den snippets", "trinh phap den snippets", "trinh cap den snippets", "trinh lap dan snippets", "trinh cap dien snippets"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug core snippets"
"locating bug code snippets" » "locating bug core 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: (((("dung bug code snippets") or ("trinh lap den snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung bug code snippets") OR ("trinh lap den snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung bug code snippets ) or ( trinh lap den snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung bug code snippets") or ("trinh lap den snippets"))) or ("locating bug code snippets"))*.