Perhaps you should try some spelling variations:
"trinh thao trong snippets" » "trinh chao trong snippets", "trinh tham trong snippets", "trinh theo trong snippets", "trinh tao trong snippets", "trinh thay trong snippets", "trinh than trong snippets", "trinh thao trong slippers"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug code slippers", "dung bug core snippets"
"locating bug code snippets" » "locating bug code slippers", "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 thao trong snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh thao trong snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("trinh thao trong snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.