Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"hanh doi trinh snippets" » "hanh doc trinh snippets", "hanh doi tinh snippets", "hanh dong trinh snippets", "thanh doi trinh snippets", "hanh noi trinh snippets", "hang doi trinh 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 ("hanh doi trinh snippets"))) or ("locating bug core snippets"))~.
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