Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
hieu hien » bieu hien, dieu hien, chieu chien
danh doi » danh di, thanh doi, dung doi
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
tuoc va » thuoc va, nuoc va, tuc va
duoc va » nuoc va, duc va, duoc ma
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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

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