Perhaps you should try some spelling variations:
"trinh hoan hoang snippets" » "trinh han hoang snippets", "trinh hoa hoang snippets", "trinh toan hoang snippets", "trinh quan hoang snippets", "trinh tran hoang snippets", "trinh tuan hoang snippets", "trinh hoan hoang 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 hoan hoang 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 hoan hoang snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("trinh hoan hoang snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))*.