Perhaps you should try some spelling variations:
"hoang nam code snippets" » "hoang nham code snippets", "hoang van code snippets", "quang nam code snippets", "hoang nam co snippets", "hoang lbm code snippets", "hoang nam de snippets", "hoang nam code slippers"
"dung cong code snippets" » "dung trong code snippets", "dung cong cong snippets", "dung cong co snippets", "dung cong che snippets", "dung cong code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

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