Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van tuan cao snippets" » "van tuan code snippets", "van quan cao snippets", "van ban cao snippets", "anh tuan cao snippets", "van toan cao snippets", "van juan cao snippets", "van quang cao 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: (((("van tuan cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van tuan cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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