Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"dung hoang anh snippets" » "dang hoang anh snippets", "dung hong anh snippets", "khung hoang anh snippets", "dung hoang minh snippets", "dung hoang van snippets", "dung hoang anh slippers"
"dung vbug code snippets" » "dung vung code snippets", "dung bug code snippets", "dung vbug code slippers"

Try widening your search to All Fields.

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