Perhaps you should try some spelling variations:
"dung dinh thuc snippets" » "dang dinh thuc snippets", "dung dich thuc snippets", "dung ninh thuc snippets", "dung dinh thuy snippets", "dung dinh chuc snippets", "dung sinh thuc snippets", "dung dinh thuc slippers"
"dung vbug code snippets" » "dung vung code snippets", "dung vbug code slippers", "dung vbung code snippets", "dung vbugs code snippets"
"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 dinh thuc snippets") or ("dung vbug code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dinh thuc snippets") OR ("dung vbug code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung dinh thuc snippets ) or ( dung vbug code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dinh thuc snippets") or ("dung vbug code snippets"))) or ("locating bug code snippets"))*.