Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"truan doi nhan snippets" » "truyen doi nhan snippets", "quan doi nhan snippets", "khuan doi nhan snippets", "truan doi khang snippets", "truan tri nhan snippets", "truan hoi nhap snippets", "truan doi nhan slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("truan doi nhan snippets") or ("dung java java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("truan doi nhan snippets") OR ("dung java java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( truan doi nhan snippets ) or ( dung java java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truan doi nhan snippets") or ("dung java java snippets"))) or ("locating bugs code snippets"))*.