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"
"tung vat trong snippets" » "tung viet trong snippets", "tung cay trong snippets", "tung dot trong snippets", "dung vat trong snippets", "tang vat trong snippets", "tung va trong snippets", "tung vat trong 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 ("tung vat trong snippets"))) or ("locating bug code snippets"))~.
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• Adding a wildcard symbol may retrieve word variants: (((("dung vbug code snippets") or ("tung vat trong snippets"))) or ("locating bug code snippets"))*.