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