Perhaps you should try some spelling variations:
doanh cao » doanh co, doanh bao, doanh cho
hieu van » thien van, lieu va, hieu ve
toc sach » hoc sach, doc sach, thuoc sach
ta doanh » va doanh, te doanh, ty doanh
lang van » dang van, tang van, hoang van
hieu va » lieu va, hieu qua
cao cua » ca cua, co cua, cau cua
bac toc » bac hoc, cac toc, bach tuoc
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
toc ta » toc tay, toc thai
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: ((te sach) OR (toc sach)) ky lang van hoi. ((hieu van) OR (hieu va)) bac toc ta doanh cao cua te~.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky lang van hoi. ((hieu van) or (hieu va)) bac toc ta doanh cao cua te*.