Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
hay tinh » may tinh, ha tinh, huy tinh
ve cham » va cham, ve chat, vu cham
tinh ve » trinh ve, tinh ven, dinh ve
su tien » su kien, su hien, tu tieng
sach ky » sac ky, sach y, sach ty
tay hoi » tay ho, tao hoi, tay thai
dan tay » ban tay, dao tay, gian tay
ve cam » ve cac, va cam, ve cai
ky dan » ky dang, ky danh, ke dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky dan tay hoi. hieu ((ve cam) OR (ve cham)) xuc hay tinh ve ((cua triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky dan tay hoi. hieu ((ve cam) OR (ve cham)) xuc hay tinh ve ((cua triet) OR (su tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky dan tay hoi. hieu ((ve cam) OR (ve cham)) xuc hay tinh ve ((cua triet) or (su tien))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky dan tay hoi. hieu ((ve cam) OR (ve cham)) xuc hay tinh ve ((cua triet) or (su tien))*.