Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
lam duoc » nam duoc, luat duoc, lam thuoc
danh tay » canh tay, dan tay, doanh tai
lam loc » lam ngoc
su sach » so sach
tay hoi » tay ho, tao hoi, tay thai
ky danh » ky anh, ky dang
vu sach » vu bach, vu khach
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) ky danh tay hoi. hieu van ((lam loc) or (lam duoc)) va thanh dai cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky danh tay hoi. hieu van ((lam loc) OR (lam duoc)) va thanh dai cua cu.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky danh tay hoi. hieu van ((lam loc) or (lam duoc)) va thanh dai cua cu*.