Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hang luat can snippets" » "hang luat code snippets", "hang luan can snippets", "hanh luat can snippets", "hang xuat can snippets", "hang luat canh snippets", "hang luat dan snippets", "hang luat ban snippets"
"dung java java snippets" » "dung va java 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: (((("dung java java snippets") or ("hang luat can snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("hang luat can snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( hang luat can snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("hang luat can snippets"))) or ("locating bug core snippets"))*.