Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"sat van tran snippets" » "sat van trang snippets", "sat van tranh snippets", "sat van tuan snippets", "sat va tran snippets", "hat van tran snippets", "hoat van tran snippets"

Try widening your search to All Fields.

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