Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoan tran he snippets" » "hoan tran code snippets", "hoang tran he snippets", "thoan tran he snippets", "toan tran he snippets", "hoan toan he snippets", "hoan tran hien snippets", "hoan tran hiep snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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