Perhaps you should try some spelling variations:
"dung nhat cau snippets" » "dung nhan cau snippets", "dang nhat cau snippets", "dung nha cau snippets", "dung nhanh cau snippets", "dung nhat ngu snippets", "dung nhat ban 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 nhat cau 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 nhat cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung nhat cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung nhat cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.