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