Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
khong cong » thong cong, khong cang, chong cong
hien xanh » hien hanh, chieu xanh, hien khanh
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cap » khan cap, thanh lap, thanh cac

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) or (hien nhanh)) - thanh ((trung cua) OR (trung cap)) khong cong ban than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh ((trung cua) OR (trung cap)) khong cong ban than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien nhanh)) - thanh ((trung cua) OR (trung cap)) khong cong ban than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - thanh ((trung cua) OR (trung cap)) khong cong ban than cap*.