Perhaps you should try some spelling variations:
"dung bai robot snippets" » "dung tao robot snippets", "dung a robot snippets", "dung tay robot snippets", "dung tai robot snippets", "dung sai robot snippets", "dung hai robot snippets", "dung bai robot 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 bai robot 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 bai robot snippets") OR ("dung cac code snippets"))) OR ("locating bug code snippets")).
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