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