Perhaps you should try some spelling variations:
"dan trinh luan snippets" » "dan trinh luat snippets", "dan trinh quan snippets", "dan trinh han snippets", "dan tinh luan snippets", "van trinh luan snippets", "hanh trinh luan snippets", "dan trinh luan 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: (((("dung java java snippets") or ("dan trinh luan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dan trinh luan snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dan trinh luan snippets ))) or ( locating bug code snippets ))*.