Perhaps you should try some spelling variations:
"tran hoang code snippets" » "quan hoang code snippets", "tran quang code snippets", "tranh hang code snippets", "tran hoang de snippets", "tran hoang cong snippets", "tran hoang cd snippets", "tran hoang code slippers"
"dung cac code snippets" » "luong cac code snippets", "dung cho code snippets", "dung tai code snippets", "dung cac cong snippets", "dung cac co snippets", "dung cac che snippets", "dung cac code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("tran hoang code snippets") or ("dung cac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran hoang code snippets") OR ("dung cac code snippets"))) OR ("locating bug code snippets")).
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