Perhaps you should try some spelling variations:
"thong cac trong snippets" » "trong cac trong snippets", "phong cach trong snippets", "thong cua trong snippets", "thong cac truong snippets", "thong cay trong snippets", "thong tac trong snippets", "thong cac trong slippers"
"dung va java snippets" » "dung java java snippets", "dung va 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: (((("dung va java snippets") or ("thong cac trong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung va java snippets") OR ("thong cac trong snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung va java snippets") or ("thong cac trong snippets"))) or ("locating bug code snippets"))*.