Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
truong cong » trong cong, truong dong, truong long
hien hanh » dieu hanh
xa truong » cac truong
hien anh » thien anh, dien anh, tien anh
tuong xa » tuong va, duong xa, huong xa
cong dan » cong san, cong tan, huong dan
than cao » toan cao, than cap, than sao
thai cao » tai cao, thoai cac, thuat cao

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 anh) OR (hien hanh)) - thanh tuong xa truong cong dan ((than cao) or (thai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien anh) OR (hien hanh)) - thanh tuong xa truong cong dan ((than cao) OR (thai cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien anh) OR (hien hanh)) - thanh tuong xa truong cong dan ((than cao) or (thai cao))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien anh) OR (hien hanh)) - thanh tuong xa truong cong dan ((than cao) or (thai cao))*.