Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
hieu hien » bieu hien, dieu hien, chieu chien
danh du » danh dau, danh tu, dinh du
duoc va » nuoc va, duc va, duoc ma
tuoc va » thuoc va, nuoc va, tuc va
so sach » bo sach, co sach, hoc sach
nang xa » nang x, lang xa, nang ma
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
du cua » duy cua, dau cua, dum cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (so sanh)) ky nang xa hoi. hieu hien bach ((tuoc va) or (duoc va)) danh du cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ky nang xa hoi. hieu hien bach ((tuoc va) OR (duoc va)) danh du cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (so sanh)) ky nang xa hoi. hieu hien bach ((tuoc va) or (duoc va)) danh du cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (so sanh)) ky nang xa hoi. hieu hien bach ((tuoc va) or (duoc va)) danh du cua tre*.