Perhaps you should try some spelling variations:
trinh dieu » trinh dien, tinh dieu, trinh dinh
dieu quan » lieu quan, hieu quan, dien quan
quan danh » luan danh, quan hanh, qua danh
cho nguoi » cua nguoi
nhan hoc » nha hoc, nhan hoa, nhan thuc
than hoc » toan hoc, thai hoc, than doc
hien han » hien hanh, hien huan, dien han

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: giao trinh dieu quan danh cho nguoi viet ((nhan hoc) or (than hoc)) hien han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh dieu quan danh cho nguoi viet ((nhan hoc) OR (than hoc)) hien han.
• Adding a wildcard symbol may retrieve word variants: giao trinh dieu quan danh cho nguoi viet ((nhan hoc) or (than hoc)) hien han*.