Perhaps you should try some spelling variations:
"tran hoan dan snippets" » "tran hoang dan snippets", "tuan hoan dan snippets", "tran doan dan snippets", "tran hoa dan snippets", "tran hoang dang snippets", "tran khoan danh snippets", "tran hoan dan 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 hoan dan 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 hoan dan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran hoan dan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran hoan dan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.