Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
thuc day » thuc dan, thuc vat
thuc va » thuc vat, thuc dan
tai cua » thai cua, tai cuc, tri cua
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
van cau » van dau, van hau, van chat
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
xuc va » duc va, tuc va, luc va

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang xa hoi. hieu van cau ((xuc va) OR (((thuc va) OR (thuc day)))) thanh tai cua viet~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky lang xa hoi. hieu van cau ((xuc va) OR (((thuc va) OR (thuc day)))) thanh tai cua viet*.