Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"duoi day trinh snippets" » "duoi dan trinh snippets", "duoi may tinh snippets", "duoi lap trinh snippets", "nuoi day trinh snippets", "doi day trinh snippets", "cuoi dan trinh snippets", "duoi day trinh 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: (((("duoi day trinh snippets") or ("dung java java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoi day trinh snippets") OR ("dung java java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( duoi day trinh snippets ) or ( dung java java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoi day trinh snippets") or ("dung java java snippets"))) or ("locating bugs code snippets"))*.