Perhaps you should try some spelling variations:
"dung vaeaaon code snippets" » "dung vaaeaaon code snippets", "dung viaeaaon code snippets", "dung veaeaaon code snippets", "dung vaeaaon core snippets", "dung vaeaaon code slippers"
"dung v code snippets" » "dung va code snippets", "dung vi code snippets", "dung ve code snippets", "dung v core snippets", "dung v code slippers"
"locating bug code snippets" » "locating bug core 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 vaeaaon code snippets") or ("dung v code snippets"))) or ("locating bug code snippets"))~.
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• Adding a wildcard symbol may retrieve word variants: (((("dung vaeaaon code snippets") or ("dung v code snippets"))) or ("locating bug code snippets"))*.