Perhaps you should try some spelling variations:
"trinh mon hat snippets" » "trinh mo hat snippets", "trinh con hat snippets", "trinh toan hat snippets", "trinh mon dat snippets", "trinh mon hai snippets", "trinh cong hat snippets", "trinh mon hat 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 mon hat 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 mon hat snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh mon hat snippets ) or ( dung bug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh mon hat snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.