Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong hui chen snippets" » "dong hoi chen snippets", "dong hai chen snippets", "dong huy chen snippets", "dong rui chen snippets", "dong zhuo chen snippets", "dong kai chen 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 hui chen 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 hui chen snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong hui chen snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hui chen snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.