Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van han tran snippets" » "van hoan tran snippets", "van tan tran snippets", "van ha tran snippets", "van hanh tran snippets", "van phan tran snippets", "van nhan tran 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 ("van han tran snippets"))) or ("locating bug core snippets"))~.
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