Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"mang may chen snippets" » "mang may che snippets", "mang xay chen snippets", "mang may chuyen snippets", "nang may chen snippets", "dang may chen snippets", "bang may 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: (((("mang may 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: (((("mang may chen snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mang may chen snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mang may chen snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.