Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van bac nhat slippery" » "van bac nha slippery", "van cac nha slippery", "van luc nhat slippery", "van ban nhat slippery", "van bao nhat slippery", "van hac nhat slippery", "van bac nhat slippers"

Try widening your search to All Fields.

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