Perhaps you should try some spelling variations:
"trinh bang code snippets" » "trinh bong code snippets", "trinh ban code snippets", "tinh bang code snippets", "trinh bang cong snippets", "trinh bang che snippets", "trinh bang cot snippets", "trinh bang code slippers"
"hanh luat code snippets" » "nganh luat code snippets", "hang luan code snippets", "hanh lam code snippets", "hanh luat cong snippets", "hanh luat de snippets", "hanh luat 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: (((("trinh bang code snippets") or ("hanh luat code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh bang code snippets") OR ("hanh luat code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("trinh bang code snippets") or ("hanh luat code snippets"))) or ("locating bug code snippets"))*.