Perhaps you should try some spelling variations:
"cau de toan snippets" » "cau de code snippets", "cau ke toan snippets", "cau de hoan snippets", "cau de ton snippets", "cau den toan snippets", "cau do toan snippets", "cuu de toan snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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