Perhaps you should try some spelling variations:
"dung dung cong snippets" » "duong dung cong snippets", "ung dung cong snippets", "dung ung cong snippets", "dung dung trong snippets"
"cong tinh java snippets" » "cong trinh java snippets", "cong vinh java snippets", "cong thanh java snippets", "cong think java snippets", "cong tinh va 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 dung cong snippets") or ("cong tinh java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dung cong snippets") OR ("cong tinh java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung dung cong snippets ) or ( cong tinh java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dung cong snippets") or ("cong tinh java snippets"))) or ("locating bug code snippets"))*.