Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
ho chieu » theo chieu, hoc thieu, doi chieu
van quan » van ban
quan ha » quan he

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh trung cua ((nhung cong) or (dung trong)) van quan ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung cua ((nhung cong) OR (dung trong)) van quan ha.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung cua ((nhung cong) or (dung trong)) van quan ha*.