Perhaps you should try some spelling variations:
"tong hop trong snippets" » "tong hoc trong snippets", "tong hoa trong snippets", "tong hoi trong snippets", "cong hop trong snippets", "dong hop trong snippets", "song hop trong snippets", "tong hop trong 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: (((("tong hop trong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tong hop trong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("tong hop trong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.