Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc nhan cua snippets" » "duc phan cua snippets", "dac nhan cua snippets", "luc nhan cua snippets", "duc nhat cua snippets", "duc nhan luc snippets", "duc nhan su snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("duc nhan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc nhan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("duc nhan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.