Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"mon thi tran snippets" » "mon thi trang snippets", "mon thi thanh snippets", "mon thi lan snippets", "mon tai tran snippets", "doan thi tran snippets", "dong thi 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 ("mon thi tran snippets"))) or ("locating bug core snippets"))~.
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