Perhaps you should try some spelling variations:
hieu dien » lieu dien, bieu dien, hieu hien
dien sach » dien anh
sach nuoc » sach duoc, cac nuoc, bach tuoc
xanh doi » xanh di, thanh doi, tinh doi
su sach » so sach, vu sach
ky lang » ky dang, ky tang, tay lang
va xanh » va danh, va hanh, va anh
doi cua » dai cua, hoi cua
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: su sach ((ky lang) OR (ky nang)) xa hoi. hieu dien sach nuoc va xanh doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) OR (ky nang)) xa hoi. hieu dien sach nuoc va xanh doi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky lang) OR (ky nang)) xa hoi. hieu dien sach nuoc va xanh doi cua tre*.