Perhaps you should try some spelling variations:
"dong xuan cuong snippets" » "dong xuan huong snippets", "dong xuan truong snippets", "dong quang cuong snippets", "hoang xuan cuong snippets", "dinh xuan cuong snippets", "dong cua cuong snippets"
"dung java java snippets" » "dung va java 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 java java snippets") or ("dong xuan cuong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dong xuan cuong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dong xuan cuong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dong xuan cuong snippets"))) or ("locating bug code snippets"))*.