Perhaps you should try some spelling variations:
"trinh khai sang snippets" » "trinh kham sang snippets", "trinh han sang snippets", "trinh tai sang snippets", "trinh kha nang snippets", "trinh nha sang snippets", "trinh thai bang snippets", "trinh khai sang 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 khai sang 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 khai sang snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh khai sang snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh khai sang snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.