Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
than toan » thanh toan, thuat toan, than thoai
than tuan » thanh tuan, tran tuan, thanh xuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (hieu lang)) - manh trung cua thong thong ((than toan) OR (than tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (hieu lang)) - manh trung cua thong thong ((than toan) OR (than tuan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (hieu lang)) - manh trung cua thong thong ((than toan) OR (than tuan)) cau*".