Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"trinh ngu cau snippets" » "trinh nghe cau snippets", "trinh ngan cau snippets", "trinh ngon cau snippets", "trinh ngu ca snippets", "trinh nhu cau snippets", "trinh ngu cu snippets"
"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"

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh ngu cau 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 ngu cau snippets") OR ("dung dung code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( trinh ngu cau snippets ) or ( dung dung code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh ngu cau snippets") or ("dung dung code snippets"))) or ("locating bugs code snippets"))*.