Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dung phi khanh snippets" » "dung thi khanh snippets", "dung chi nhanh snippets", "dung thi thanh snippets", "dung phu khanh snippets", "xung phi khanh snippets", "dung chi khanh 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 phi khanh snippets"))) or ("locating bug core snippets"))~.
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