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