Perhaps you should try some spelling variations:
"dung tinh dan slippers" » "dang tinh dan slippers", "dung ninh dan slippers", "dung tin dan slippers", "dung trinh dan slippers", "dung tinh da slippers", "dung binh dan slippers", "dung tinh dan slippery", "dung tinh dan 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: (((("dung tinh dan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tinh dan slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tinh dan slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tinh dan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.