Perhaps you should try some spelling variations:
"dung tren tham snippets" » "dung trinh tham snippets", "dung tren thi snippets", "dung hien tham snippets", "dung trong tham snippets", "dung trung tham snippets", "dung tren tham slippers"
"using a code snippets" » "using a core snippets", "using a code slippers"
"locating bug code snippets" » "locating bug core 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: (((("using a code snippets") or ("dung tren tham snippets"))) or ("locating bug code snippets"))~.
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