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 dan trong snippets" » "tung ban trong snippets", "tung dat trong snippets", "tung dao trong snippets", "dung dan trong snippets", "huong dan trong snippets", "trung dai trong snippets", "tung dan trong slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung vbug code snippets") or ("tung dan trong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vbug code snippets") OR ("tung dan trong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vbug code snippets ) or ( tung dan trong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vbug code snippets") or ("tung dan trong snippets"))) or ("locating bug code snippets"))*.