Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thien van » thi van
van cham » van chat, van tham, va cham
cham tuc » nham thuc, pham thuc, tham thuc
dinh dau » dinh dat, dinh du, danh dau
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, mang xa, ang xa
nang ma » tang ma, sang ma, nang cao
xa dinh » xac dinh, va dinh, ba dinh
dau cua » dai cua, day cua, cau cua
cua tre » cua te, cuu tre, cua triet

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 ((((nang xa) or (nang ma))) or (nang x)) hoi. thien van cham tuc xa dinh dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky ((((nang xa) OR (nang ma))) OR (nang x)) hoi. thien van cham tuc xa dinh dau cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky ((((nang xa) or (nang ma))) or (nang x)) hoi. thien van cham tuc xa dinh dau cua tre*.