Perhaps you should try some spelling variations:
"khai luan trinh snippets" » "khai xuan trinh snippets", "khai luan tinh snippets", "khai luan tranh snippets", "khau luan trinh snippets", "khai tuan trinh snippets", "thai luan trinh snippets", "khai luan trinh 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: (((("khai luan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khai luan trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai luan trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai luan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.