Perhaps you should try some spelling variations:
"dung using data snippets" » "dung ung data snippets", "dung sinh data snippets", "dung uong data snippets", "dung using java snippets", "dung using sat snippets", "dung missing data snippets", "dung using data slippers"
"dung doi thuc snippets" » "huong doi thuc snippets", "dung tai thuc snippets", "dung co thuc snippets", "dung do thuc snippets", "dung doi thu snippets", "dung doc thuc snippets", "dung doi thuc slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung doi thuc snippets") or ("dung using data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung doi thuc snippets") OR ("dung using data snippets"))) OR ("locating bug code snippets")).
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