Perhaps you should try some spelling variations:
"trinh tren dinh snippets" » "trinh truyen dinh snippets", "trinh tuyen dinh snippets", "trinh tieng dinh snippets", "trinh tran dinh snippets", "trinh trien dich snippets", "trinh trinh dinh snippets", "trinh tren dinh 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.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh tren dinh 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 tren dinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tren dinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tren dinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.