Perhaps you should try some spelling variations:
chiet tach » chieu sach
hien hanh » dieu hanh
hang cong » dang cong, hang nong, bang cong
cong cua » cong cu, dong cua, huong cua
cua hang » cua dang, cua nhung, cua cong
cong van » cong vang, cong san, song van
toan cau » toan cao, toan ban, toan tai
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 ((chiet tach) or (hien hanh)) - thanh cong cua hang cong van ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (hien hanh)) - thanh cong cua hang cong van ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (hien hanh)) - thanh cong cua hang cong van ((toan cau) or (toan tap))*.