Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"trong sat phan snippets" » "trong san phan snippets", "trong dat phan snippets", "trong sam phan snippets", "trong sat nhan snippets", "trong vat phan snippets", "trong xuat phan snippets"
"locating bug core snippets" » "locating bug code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("trong sat phan snippets"))) or ("locating bug core snippets"))~.
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