Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cuu hoc data snippets" » "cuu hoc dat snippets", "cuu hoc dan snippets", "cuu hoc dai snippets", "cua hoc data snippets", "cuu thuoc data snippets", "cuu khoa data snippets"

Try widening your search to All Fields.

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