Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cau phuc » cau truc, chau phu, huu phuc
cau tren » dau tren, ca tren, cau treo
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va danh, ban hanh
hieu ke » hieu kem, chieu ke, hieu ky
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
cu tren » tu tren, dua tren
ke cau » ket cau

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: thuoc sach ky dang xa hoi. hieu ke cau phuc ((va hanh) OR (va thanh)) vi ((cau tren) OR (cu tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky dang xa hoi. hieu ke cau phuc ((va hanh) or (va thanh)) vi ((cau tren) OR (cu tren))~".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky dang xa hoi. hieu ke cau phuc ((va hanh) or (va thanh)) vi ((cau tren) OR (cu tren))*.