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