Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
nhung cong » dung cong, thong cong, hang cong
hieu lang » hieu quang, nhieu tang, hieu van
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
tran tuan » tran xuan, tran quang, tran thanh
cong tan » cong tac, cong san, cong thanh
tran tap » toan tap, tran tan, trang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu lang) or (chieu sang)) - thanh trung cap nhung cong tan ((tran tap) OR (tran tuan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (chieu sang)) - thanh trung cap nhung cong tan ((tran tap) OR (tran tuan))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) or (chieu sang)) - thanh trung cap nhung cong tan ((tran tap) OR (tran tuan))*".