Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
trung quan » truong quan, trong quan, trung tuan
dong trong » duong trong, cong trong, dong thong
thanh ban » thanh san, thanh van, thanh bac
ban cau » bang cau, ban can, van cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu xanh)) - thanh trung quan ((dong trong) OR (dung trong)) thanh ban cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu xanh)) - thanh trung quan ((dong trong) OR (dung trong)) thanh ban cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu xanh)) - thanh trung quan ((dong trong) OR (dung trong)) thanh ban cau*.