Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
thien van » thi van
lam duoc » nam duoc, luat duoc, lam thuoc
van cua » vang cua, ban cua, dan cua
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
dung ha » dung va, dung he, dung khoa
ky dung » ly dung, ky dang, ky vung
ha hoi » hoa hoi, ha noi, xa hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dung ha hoi. thien van ((lam duoc) or (nam thuoc)) ban thanh van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dung ha hoi. thien van ((lam duoc) OR (nam thuoc)) ban thanh van cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ky dung ha hoi. thien van ((lam duoc) or (nam thuoc)) ban thanh van cua te*.