Perhaps you should try some spelling variations:
"dung rong hoat snippets" » "dung trong hoat snippets", "dung cong hoat snippets", "dung dong hoat snippets", "dung dong hoa snippets", "dung cong hoa snippets"
"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 rong hoat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung rong hoat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung rong hoat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung rong hoat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.