Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"hoc ban mach snippets" » "hoc ban sach snippets", "hoc ranh mach snippets", "hoc ban hanh snippets", "hoc bang mach snippets", "hoc dan mach snippets", "hoc bai mach snippets"

Try widening your search to All Fields.

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