Perhaps you should try some spelling variations:
"dung lan dung snippets" » "dung luan dung snippets", "dung land dung snippets", "dung lam dung snippets", "dung van dung snippets", "dung dan dung snippets", "dung lan hung snippets", "dung lan dung slippers"
"dung dat code snippets" » "dung va code snippets", "dung tai code snippets", "dung rate code snippets", "dung dat de snippets", "dung dat code 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 lan dung snippets") or ("dung dat code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung lan dung snippets") OR ("dung dat code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lan dung snippets ) or ( dung dat code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lan dung snippets") or ("dung dat code snippets"))) or ("locating bug code snippets"))*.