Perhaps you should try some spelling variations:
"dung san dat snippets" » "dong san dat snippets", "dung sai dat snippets", "dung luan dat snippets", "dung dan dat snippets", "dung ban dat snippets", "dung san dam snippets", "dung san dat 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: (((("dung san dat snippets") or ("dung bug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung san dat snippets") OR ("dung bug code snippets"))) OR ("locating bug code snippets")).
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