Perhaps you should try some spelling variations:
"trinh tran quoc snippets" » "trinh trang quoc snippets", "trinh toan quoc snippets", "trinh tren quoc snippets", "trinh trung quoc snippets", "trinh han quoc snippets", "trinh tran duc snippets", "trinh tran quoc 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: (((("dung java java snippets") or ("trinh tran quoc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trinh tran quoc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh tran quoc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh tran quoc snippets"))) or ("locating bug code snippets"))*.