Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hien bach » vien bach, hien hanh, dien sach
thuoc va » thuc va, thuoc ma, thuong va
danh du » danh dau, danh tu, dinh du
duoc va » nuoc va, duc va, duoc ma
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
du cuu » tu cuu
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu ((hien bach) OR (thien hach)) ((thuoc va) or (duoc va)) danh du cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ((hien bach) OR (thien hach)) ((thuoc va) OR (duoc va)) danh du cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ((hien bach) OR (thien hach)) ((thuoc va) or (duoc va)) danh du cuu tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ((hien bach) OR (thien hach)) ((thuoc va) or (duoc va)) danh du cuu tre*.