Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
cua thuong » cua truong, cua phuong, ca thuong
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, trung cap
cong dang » cong dong, cong dan, cong dung
toan cao » toan tap
toan ban » van ban

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 hanh - thanh trung cua thuong cong dang ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - thanh trung cua thuong cong dang ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh trung cua thuong cong dang ((toan cao) or (toan ban))*.