Perhaps you should try some spelling variations:
"trinh hoi dat snippets" » "trinh hoa dat snippets", "trinh do dat snippets", "trinh han dat snippets", "trinh hoi dap snippets", "trinh hoi dan snippets", "trinh hoc dat snippets", "trinh hoi dat slippers"
"dung ung code snippets" » "dung trung code snippets", "dung quang code snippets", "dung chung code snippets", "dung ung co snippets", "dung ung code slippers"
"locating bug code 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 hoi dat snippets") or ("dung ung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh hoi dat snippets") OR ("dung ung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh hoi dat snippets ) or ( dung ung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh hoi dat snippets") or ("dung ung code snippets"))) or ("locating bug code snippets"))*.