Perhaps you should try some spelling variations:
"trinh boi doanh snippets" » "trinh hoi doanh snippets", "trinh bong doanh snippets", "trinh do doanh snippets", "trinh voi doanh snippets", "trinh doi doanh snippets", "trinh tri doanh snippets", "trinh boi doanh 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 boi doanh 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 boi doanh snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh boi doanh snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh boi doanh snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.