Perhaps you should try some spelling variations:
"dung tieu can snippets" » "dung hieu can snippets", "dung tren can snippets", "dung tin can snippets", "dung tiep can snippets", "dung dieu can snippets", "dung tiem can snippets"
"dung ung java snippets" » "dung trung java snippets", "dung quang java snippets", "dung chung java snippets", "dung using java snippets", "dung ngu java snippets", "dung ung va 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 ung java snippets") or ("dung tieu can snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ung java snippets") OR ("dung tieu can snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ung java snippets ) or ( dung tieu can snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ung java snippets") or ("dung tieu can snippets"))) or ("locating bug code snippets"))*.