Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hien bach » vien bach, hien hanh, dien sach
thuc va » thuc vat, thuc dan, thuc day
danh du » danh dau, danh tu, dinh du
duoc va » nuoc va, duc va, duoc ma
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
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 y nang x hoi. hieu ((hien bach) or (thien hach)) ((thuc va) or (duoc va)) danh du cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang x hoi. hieu ((hien bach) OR (thien hach)) ((thuc va) OR (duoc va)) danh du cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang x hoi. hieu ((hien bach) or (thien hach)) ((thuc va) or (duoc va)) danh du cuu tre*.