Perhaps you should try some spelling variations:
"trinh giang dan snippets" » "trinh giao dan snippets", "trinh giai dan snippets", "trinh tieng dan snippets", "trinh gian dan snippets", "trinh giang day snippets", "trinh giang van snippets", "trinh giang dan slippers"
"dung java java snippets" » "dung va java snippets", "dung java java 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: (((("trinh giang dan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh giang dan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh giang dan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh giang dan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.