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