Perhaps you should try some spelling variations:
"trinh van tran snippets" » "trinh han tran snippets", "trinh quan tran snippets", "trinh toan tran snippets", "trinh van trang snippets", "trinh van tranh snippets", "trinh van tuan snippets", "trinh van tran 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 van tran 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 van tran snippets") OR ("dung ung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh van tran snippets ) or ( dung ung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh van tran snippets") or ("dung ung code snippets"))) or ("locating bug code snippets"))*.