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