Perhaps you should try some spelling variations:
thanh tung » thanh cong
tung quan » tuong quan, trung quan, dung quan
quan cong » qua cong, luan cong, quan dong
cong cong » cong dong, trong cong, dung cong
hoc dieu » hoc thieu, hoc hien
cong san » cong tac
toan cao » toan ban
toan tap » toan 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 dieu hanh - thanh tung quan cong cong san ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu hanh - thanh tung quan cong cong san ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc dieu hanh - thanh tung quan cong cong san ((toan cao) or (toan tap))*.