Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"do sach phan snippets" » "do sach han snippets", "do mach phan snippets", "do sach phat snippets", "doc sach phan snippets", "do sanh phan snippets", "bo sach phan snippets"

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 ("do sach phan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("do sach phan snippets"))) OR ("locating bug core snippets")).
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