Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dat hang cua snippets" » "dat hang code snippets", "dat khanh cua snippets", "dat quang cua snippets", "tat thang cua snippets", "dat mang cua snippets", "dat hang ca snippets", "dat huong cua 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: (((("dat hang cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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