Perhaps you should try some spelling variations:
"dang luat hoi snippets" » "dan luat hoi snippets", "dung luat hoi snippets", "tang luat hoi snippets", "dang luat moi snippets", "dang luat so snippets", "dang luat dai snippets"
"dung java java snippets" » "dung va java 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: (((("dang luat hoi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang luat hoi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang luat hoi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang luat hoi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.