Perhaps you should try some spelling variations:
thien van » thi van
cau thuc » cau truc, cuu thuc, can thuc
toc sach » hoc sach, doc sach, thuoc sach
va nhanh » va thanh, va hanh, va nganh
tu sach » thu sach, su sach, te sach
va nhan » van nhan, ca nhan, va phan
van cau » van dau, van hau, van chat
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet
ha cua » hoa cua, hai cua, nha cua

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: ((tu sach) OR (toc sach)) ky tang xa hoi. thien van cau thuc ((va nhanh) OR (va nhan)) ha cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (toc sach)) ky tang xa hoi. thien van cau thuc ((va nhanh) OR (va nhan)) ha cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky tang xa hoi. thien van cau thuc ((va nhanh) OR (va nhan)) ha cua tre*.