Perhaps you should try some spelling variations:
doanh giao » danh gia, anh giao, toan giao
toc sach » hoc sach, thuoc sach, nuoc sach
hieu van » hieu va, thien van, lieu va
giao cua » gian cua, gia cua, giau cua
ta doanh » va doanh, te doanh, ty doanh
cac thoi » cac toi, cac hop, cac tro
doc sach » hoc sach, nuoc sach, dac sac
ky dang » ky nang, ky danh
van cac » van hac, van cau, van bac
ky lang » ky nang, ky tang, tay lang
thoi ta » thoi va, thoi xa, thoi dai
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (doc sach)) ((ky lang) OR (ky dang)) xa hoi. hieu van cac thoi ta doanh giao cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (doc sach)) ((ky lang) or (ky dang)) xa hoi. hieu van cac thoi ta doanh giao cua te~".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (doc sach)) ((ky lang) or (ky dang)) xa hoi. hieu van cac thoi ta doanh giao cua te*.