Perhaps you should try some spelling variations:
"dung tay robot snippets" » "dung tao robot snippets", "dung a robot snippets", "dung tay robto snippets", "dung tai robot snippets", "dung may robot snippets", "vung tay robot snippets", "dung tay robot slippers"
"dung vbugs code snippets" » "dung vbugs code slippers", "dung vbungs code snippets", "dung vbugss code snippets"
"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 vbugs code snippets") or ("dung tay robot snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vbugs code snippets") OR ("dung tay robot snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung vbugs code snippets") or ("dung tay robot snippets"))) or ("locating bug code snippets"))*.