Perhaps you should try some spelling variations:
"cau doi hoac snippets" » "cau doi code snippets", "cau doi hoa snippets", "cau doi hoat snippets", "cau doi thoai snippets", "cau hoi hoac snippets", "cau do hoac snippets", "cau noi hoac 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 doi hoac 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 doi hoac snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cau doi hoac snippets"))) or ("locating bug core snippets"))*.