Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung huong bao snippets" » "dung thuong bao snippets", "dung phuong bao snippets", "dong huong bao snippets", "dung phuong bac snippets", "dung huong giao snippets", "dung truong bao 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 ("dung huong bao snippets"))) or ("locating bug core snippets"))~.
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