Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"phan hoc duc snippets" » "phap hoc duc snippets", "phan hoa duc snippets", "phau hoc duc snippets", "phan hoc duoc snippets", "phan hoc nuoc snippets", "phan hoc thuc snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("phan hoc duc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan hoc duc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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