Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"hoc tin mach snippets" » "hoc tinh mach snippets", "hoc tim mach snippets", "hoc tin sach snippets", "hoc tan mach snippets", "hoc tieng mach snippets", "hoc hien mach snippets"

Try widening your search to All Fields.

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