Perhaps you should try some spelling variations:
"locating bung code snippets" » "locating bug code snippets", "locating bung code slippers"
"dung khang xu snippets" » "dung thang xu snippets", "quang khang xu snippets", "dung nhan xu snippets", "dung chang xu snippets", "dung khang cu snippets", "dung chang xue snippets", "dung khang xu slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"

Try widening your search to All Fields.

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