Perhaps you should try some spelling variations:
"trinh doanh duoc snippets" » "trinh danh duoc snippets", "kinh doanh duoc snippets", "chinh doanh duoc snippets", "trinh doanh cuoc snippets", "trinh doanh quoc snippets", "trinh dong duoc snippets", "trinh doanh duoc 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 doanh duoc 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 doanh duoc snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh doanh duoc snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh doanh duoc snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.