Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cac nhat de snippets" » "cac nhat code snippets", "cac nha de snippets", "cac nhan de snippets", "cac chat de snippets", "cac nhat ve snippets", "cac nhat le snippets", "cac chat deo snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("cac nhat de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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