Perhaps you should try some spelling variations:
"hanh van trinh snippets" » "hanh van thinh snippets", "hanh van tinh snippets", "hanh dan trinh snippets", "thanh van trinh snippets", "khanh van trinh snippets", "hanh va trinh snippets", "hanh van trinh slippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets", "dung dung code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("hanh van trinh snippets") or ("dung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh van trinh snippets") OR ("dung dung code snippets"))) OR ("locating bug code snippets")).
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