Perhaps you should try some spelling variations:
"luan anh core snippets" » "luan many core snippets", "luan anh co snippets", "luan anh cong snippets", "luan danh core snippets", "tuan anh core snippets", "lan anh core snippets"
"dung va java snippets" » "dung java java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

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