Perhaps you should try some spelling variations:
"xuan nhan dat snippets" » "xuan thanh dat snippets", "xuan toan dat snippets", "van nhan dat snippets", "xuan nhan dan snippets", "xuan nhan vat snippets", "xuan nhan dai snippets", "xuan nhan dat 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: (((("xuan nhan dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan nhan dat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan nhan dat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan nhan dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.