Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"chon van den snippets" » "chon va den snippets", "thong van den snippets", "phong van den snippets", "chon van de snippets", "chon van der snippets", "chon ban den snippets"
"locating bug code snippets" » "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: (((("dung java java snippets") or ("chon van den snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("chon van den snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( chon van den snippets ))) or ( locating bug code snippets )).
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