Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets", "dung dung code slippers"
"trinh tu code snippets" » "trinh ky code snippets", "trinh do code snippets", "trinh bug code snippets", "trinh tu code slippers"

Try widening your search to All Fields.

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