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