Perhaps you should try some spelling variations:
"dang tran tuan snippets" » "dang thanh tuan snippets", "quang tran tuan snippets", "hoang tran tuan snippets", "dang tran xuan snippets", "dang tran quang snippets", "dang tran thanh snippets", "dang tran tuan slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs 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: (((("dang tran tuan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang tran tuan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang tran tuan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang tran tuan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.