Perhaps you should try some spelling variations:
"dang cung tri snippets" » "dang cuong tri snippets", "dang cong tri snippets", "dang hung tri snippets", "dang dung tri snippets", "dang cung tai snippets", "dang quang tri snippets", "dang cung tri 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: (((("dang cung tri snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang cung tri snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang cung tri snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang cung tri snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.