Perhaps you should try some spelling variations:
"dung quang code snippets" » "dang quang code snippets", "luong quang code snippets", "dung luan code snippets", "dung quang de snippets", "dung quang code slippers"
"dung sinh trac snippets" » "duong sinh trac snippets", "dang sinh trac snippets", "dung ninh trac snippets", "dung sinh thai snippets", "dung sinh thuc snippets", "dung anh trac snippets", "dung sinh trac 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 sinh trac snippets") or ("dung quang code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung sinh trac snippets") OR ("dung quang code snippets"))) OR ("locating bug code snippets")).
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