Perhaps you should try some spelling variations:
"tran hoang dao snippets" » "quan hoang dao snippets", "tran quang dao snippets", "tranh hang dao snippets", "tran hoang bao snippets", "tran hoang cao snippets", "tran hoang hao snippets", "tran hoang dao 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 dao 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 dao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran hoang dao snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran hoang dao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.