Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trinh cau den snippets" » "trinh cau code snippets", "trinh chat den snippets", "trinh chao den snippets", "trinh tu den snippets", "trinh cap den snippets", "trinh cau de snippets", "trinh hau den snippets"
"dung java java snippets" » "dung va java 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 cau den snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cau den snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trinh cau den snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cau den snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.