Perhaps you should try some spelling variations:
thanh tung » thanh cong
hien hanh » dieu hanh
tong cong » trong cong, cong cong, dung cong
tung cua » trung cua, tuong cua, dung cua
cua tong » cua cong, cua dong, cua nong
cong san » cong tac
van tu » van thu, van du, van tuan

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 tung cua tong cong san ((van tu) or (ban tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - thanh tung cua tong cong san ((van tu) OR (ban tu)).
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - thanh tung cua tong cong san ((van tu) or (ban tu))*.