Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dun nang du snippets" » "dung nang du snippets", "den nang du snippets", "luan nang du snippets", "dun nang tu snippets", "dun nang luc snippets", "dun nang doc 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: (((("dun nang du snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dun nang du snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dun nang du snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dun nang du snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.