Perhaps you should try some spelling variations:
"trinh cau dan snippets" » "trinh chat dan snippets", "trinh chao dan snippets", "trinh tu dan snippets", "trinh cau danh snippets", "trinh cac dan snippets", "trinh ca dan snippets", "trinh cau dan slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 cho code snippets") or ("trinh cau dan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cho code snippets") OR ("trinh cau dan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cho code snippets ) or ( trinh cau dan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cho code snippets") or ("trinh cau dan snippets"))) or ("locating bug code snippets"))*.