Perhaps you should try some spelling variations:
"tran hoang lam snippets" » "quan hoang lam snippets", "tran quang lam snippets", "tranh hang lam snippets", "tran hoang nam snippets", "tran hoang nham snippets", "tran hoang lang snippets", "tran hoang lam slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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