Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hanh trang » thanh trung, canh tranh, hanh trinh
hien hanh » dieu hanh
trang cua » tranh cua, tang cua, trung cua
dang cong » dung cong
cua dang » cua cong, cua ban
van toan » van tuan, van tan, van thanh
van tai » von tai, 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: ho ((thiet tach) or (hien hanh)) - hanh trang cua dang cong ((van toan) or (van tai)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((thiet tach) OR (hien hanh)) - hanh trang cua dang cong ((van toan) OR (van tai)) cau.
• Adding a wildcard symbol may retrieve word variants: ho ((thiet tach) or (hien hanh)) - hanh trang cua dang cong ((van toan) or (van tai)) cau*.