Perhaps you should try some spelling variations:
"can thiet de snippets" » "dan thiet de snippets", "cac thiet de snippets", "cad thiet de snippets", "can thiet ke snippets", "can thiet yeu snippets", "can thuyet de 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: (((("can thiet de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can thiet de snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can thiet de snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can thiet de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.