Perhaps you should try some spelling variations:
"dung phu thinh snippets" » "dung phuc thinh snippets", "dung phu tinh snippets", "dung chu thich snippets", "dung phan thinh snippets", "dung cho thinh snippets", "dung he thinh snippets", "dung phu thinh slippers"
"dung cac code snippets" » "luong cac code snippets", "dung cho code snippets", "dung tai code snippets", "dung cac cong snippets", "dung cac co snippets", "dung cac che snippets", "dung cac code 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 phu thinh snippets") or ("dung cac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung phu thinh snippets") OR ("dung cac code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung phu thinh snippets") or ("dung cac code snippets"))) or ("locating bug code snippets"))*.