Perhaps you should try some spelling variations:
"dung danh cao snippets" » "dung doanh cao snippets", "dung dan cao snippets", "dung dang cao snippets", "dung danh cho snippets", "dung danh ca snippets"
"dung uong java snippets" » "dung huong java snippets", "dung luong java snippets", "dung cong java snippets", "dung using 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: (((("dung danh cao snippets") or ("dung uong java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung danh cao snippets") OR ("dung uong java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung danh cao snippets ) or ( dung uong java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung danh cao snippets") or ("dung uong java snippets"))) or ("locating bug code snippets"))*.