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"
"trong cau thep snippets" » "trong cac thep snippets", "trong ca thep snippets", "thong cau thep snippets", "trong cau theo snippets", "trong cau thi snippets", "trong cot thep snippets", "trong cau thep 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 ("trong cau thep snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung using data snippets") OR ("trong cau thep snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung using data snippets ) or ( trong cau thep snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung using data snippets") or ("trong cau thep snippets"))) or ("locating bug code snippets"))*.