Perhaps you should try some spelling variations:
"luan doan thi snippets" » "luan hoan thi snippets", "quan doan thi snippets", "luat doanh thi snippets", "luan dan thi snippets", "luan doanh tai snippets", "luan hoang thi snippets", "luan doan thi 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"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("luan doan thi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan doan thi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( luan doan thi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets ))*.