Perhaps you should try some spelling variations:
"dinh tren trinh snippets" » "dinh tien trinh snippets", "dinh trang trinh snippets", "dinh tra trinh snippets", "dinh trong trinh snippets", "dinh tri trinh snippets", "dinh dien trinh snippets", "dinh tren 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.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java snippets") or ("dinh tren trinh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dinh tren trinh snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dinh tren trinh snippets"))) or ("locating bug code snippets"))*.