Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, hien hanh
trung cua » truong cua, trung tuan, trung cap
tien anh » tieng anh, tien manh, dien anh
tung cua » tuong cua, dung cua, tang cua
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
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 ((thien chanh) or (tien anh)) - thanh ((tung cua) OR (trung cua)) trong cong tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien chanh) OR (tien anh)) - thanh ((tung cua) OR (trung cua)) trong cong tac than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien chanh) or (tien anh)) - thanh ((tung cua) OR (trung cua)) trong cong tac than cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien chanh) or (tien anh)) - thanh ((tung cua) OR (trung cua)) trong cong tac than cap*.