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"
"luong cac trong snippets" » "luong cuoc trong snippets", "luong va trong snippets", "luong tai trong snippets", "luong cac truong snippets", "luong cay trong snippets", "luong tac trong snippets", "luong cac 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 ("luong cac trong snippets"))) or ("locating bug code snippets"))~.
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• Adding a wildcard symbol may retrieve word variants: (((("dung vbug code snippets") or ("luong cac trong snippets"))) or ("locating bug code snippets"))*.