Perhaps you should try some spelling variations:
"dung using data snippets" » "dung ung data snippets", "dung sinh data snippets", "dung uong data snippets", "dung using java snippets", "dung using sat snippets", "dung missing data snippets", "dung using data slippers"
"dung tran van snippets" » "dung tren van snippets", "hung tran van snippets", "dang tran van snippets", "dung luan van snippets", "dung tran van slippers"
"locating bug code snippets" » "locating bug code slippers", "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 using data snippets") or ("dung tran van snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung using data snippets") OR ("dung tran van snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung using data snippets ) or ( dung tran van snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung using data snippets") or ("dung tran van snippets"))) or ("locating bug code snippets"))*.