Perhaps you should try some spelling variations:
"hanh java java snippets" » "hanh va java snippets"
"mang viet can snippets" » "nang viet can snippets", "anh viet can snippets", "mai viet can snippets", "mang viet van snippets", "mang viet ca snippets", "mang vien can snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hanh java java snippets") or ("mang viet can snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh java java snippets") OR ("mang viet can snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh java java snippets ) or ( mang viet can snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh java java snippets") or ("mang viet can snippets"))) or ("locating bug code snippets"))*.