Perhaps you should try some spelling variations:
"dung tri thin snippets" » "dung tai thin snippets", "dung tren thin snippets", "nhung tri thin snippets", "dung thi thin snippets", "dung tri tin snippets", "dung thi thien snippets", "dung tri thin slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho 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 tri thin snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tri thin snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
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