Perhaps you should try some spelling variations:
danh dai » danh dau, danh di, danh sai
ngan hoc » nhan hoc, nganh hoa, nganh soc
dua tren » dung tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu vu » hieu va, hieu ve, hieu su
va danh » va dinh, va dan, va hanh
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang x ho. hieu vu ngan hoc va danh dai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x ho. hieu vu ngan hoc va danh dai ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x ho. hieu vu ngan hoc va danh dai ((dua tren) or (cua te))*.