Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan luan hoc snippets" » "dan luan code snippets", "doanh luan hoc snippets", "dung luan hoc snippets", "tang luan hoc snippets", "dan luan hoan snippets", "dan quang hoc snippets", "dan luan khoa snippets"
"python using java snippets" » "python using data snippets"

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

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