Perhaps you should try some spelling variations:
"dung benh xo snippets" » "duong benh xo snippets", "dung menh xo snippets", "trung benh xo snippets", "dung benh co snippets", "dung benh hoc snippets", "dung benh noi 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 benh xo 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 benh xo snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung benh xo snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung benh xo snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.