Perhaps you should try some spelling variations:
tang quan » tang luan, nang quan, tong quan
hien hanh » dieu hanh
quan dung » quang dung, quan duong, qua dung
tien anh » tieng anh, tien manh, dien anh
anh tang » anh bang, anh dang, anh nang
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh 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 ((tien anh) or (hien hanh)) - anh tang quan dung trong ((van toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien anh) OR (hien hanh)) - anh tang quan dung trong ((van toan) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien anh) or (hien hanh)) - anh tang quan dung trong ((van toan) or (van tuan)) cau*.