Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc viec cho snippets" » "toc viec code snippets", "toc viet cho snippets", "duoc viec cho snippets", "tich viec cho snippets", "toc viec khoa snippets", "toc viec nhom snippets", "toc viec cua 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: (((("toc viec cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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