Perhaps you should try some spelling variations:
"dung dieu chim snippets" » "duong dieu chim snippets", "dang dieu chim snippets", "dung hieu chim snippets", "dung dieu chinh snippets", "dung hieu chi snippets", "dung dieu cam 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 dieu chim 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 dieu chim snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung dieu chim snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dieu chim snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.