Perhaps you should try some spelling variations:
"dung vbug code snippets" » "dung vung code snippets", "dung vbug code slippers", "dung vbung code snippets", "dung vbugs code snippets"
"dung van doanh snippets" » "dung toan doanh snippets", "dung van dong snippets", "dung van thanh snippets", "duong van doanh snippets", "dung va doanh snippets", "dang van doanh snippets", "dung van doanh slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung vbug code snippets") or ("dung van doanh snippets"))) or ("locating bug code snippets"))~.
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• Adding a wildcard symbol may retrieve word variants: (((("dung vbug code snippets") or ("dung van doanh snippets"))) or ("locating bug code snippets"))*.