Perhaps you should try some spelling variations:
"cu cac hoan snippets" » "cu cac code snippets", "cu cac khoan snippets", "cu cach hoan snippets", "cu cac hoat snippets", "cua cac hoan snippets", "cuu cac hoan snippets", "cu cao hoan 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 ("cu cac hoan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cu cac hoan snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cu cac hoan snippets"))) or ("locating bug core snippets"))*.