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