Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"
"dung lei zheng snippets" » "dung li zheng snippets", "dung wei zhang snippets", "dung lai zheng snippets", "dung le zheng snippets", "dung len zheng snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dung lei zheng snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dung lei zheng snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dung lei zheng snippets"))) or ("locating bug core snippets"))*.