Perhaps you should try some spelling variations:
"dung rui chen snippets" » "dung rui code snippets", "dung rung chen snippets", "dung tai chen snippets", "dung cua chen snippets", "dung hui chen snippets", "dung kai chen snippets", "dung pei chen snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java 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 rui chen snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung rui chen snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung rui chen snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung rui chen snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.