Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
thanh cac » hanh cac, thanh bac, thanh ca
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh ((trung cua) or (trung tuan)) hang cong tan ((than cap) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((trung cua) OR (trung tuan)) hang cong tan ((than cap) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((trung cua) or (trung tuan)) hang cong tan ((than cap) or (thanh cac))*.