Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
trung cau » trung cap, trung ca, trung can
hoa cong » cua cong, va cong, hoa co
cong tan » cong tac, cong san, cong thanh
cau hoa » cau hoi
tan ha » tang ha, van ha, tan ca
ha cau » ha chau, hoa cau, pha cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chieu xanh)) - thanh trung cau hoa cong tan ha cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu xanh)) - thanh trung cau hoa cong tan ha cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chieu xanh)) - thanh trung cau hoa cong tan ha cau*.