Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dac toan anh snippets" » "dan toan anh snippets", "duc toan anh snippets", "dac tan anh snippets", "dac toan hanh snippets", "dac tuan anh snippets", "dac tran anh snippets"

Try widening your search to All Fields.

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