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 sach thuc snippets" » "duong sach thuc snippets", "dung sai thuc snippets", "dung cac thuc snippets", "dung cach thuc snippets", "dung sach thu snippets", "dung sach thue snippets", "dung sach 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 using data snippets") or ("dung sach thuc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung using data snippets") OR ("dung sach thuc snippets"))) OR ("locating bug code snippets")).
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