Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien bach » vien bach, thien hach, hien hanh
danh doi » danh di, thanh doi, dung doi
tuoc va » thuoc va, nuoc va, tuc va
doi cua » dai cua, hoi cua
duoc va » nuoc va, duc va, duoc ma
so sach » so sanh, bo sach, hoc sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
co sach » bo sach, cuon sach, hoc sach
cua tre » cua te, cuu tre, cua triet

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 (co sach)) ty nang xa hoi. hieu hien bach ((tuoc va) OR (duoc va)) danh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) ty nang xa hoi. hieu hien bach ((tuoc va) OR (duoc va)) danh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (co sach)) ty nang xa hoi. hieu hien bach ((tuoc va) OR (duoc va)) danh doi cua tre*.