Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
hieu hien » bieu hien, dieu hien, chieu chien
danh dum » danh du, anh duc, danh tu
su sach » so sach, vu sach
duoc va » nuoc va, duc va, duong va
dum cua » duy cua, dam cua, dung cua
duoc ma » duoc lam
tuoc va » thuoc va, nuoc va, tuc va
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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 y nang ma hoi. hieu hien bach ((tuoc va) or (((duoc va) or (duoc ma)))) danh dum cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. hieu hien bach ((tuoc va) OR (((duoc va) OR (duoc ma)))) danh dum cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu hien bach ((tuoc va) or (((duoc va) or (duoc ma)))) danh dum cua tre*.