Perhaps you should try some spelling variations:
"trinh tham trong snippets" » "trinh cham trong snippets", "trinh tam trong snippets", "trinh kham trong snippets", "trinh pham trong snippets", "trinh thay trong snippets", "trinh than trong snippets", "trinh tham 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 tham 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 tham trong snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tham trong snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tham trong snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.