Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
su sach » so sach, vu sach
dinh ve » dinh ket, dinh van
va dinh » van dinh, va kinh, va tinh
sach ky » sac ky, sach y, sach ty
cac lao » cac loai, cac giao, cac lang
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet
ca lao » cua lao, ca dao, ca cao
ve cua » le cua, de cua, te cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang xa)) hoi. hieu hien ((cac lao) OR (ca lao)) va dinh ve cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xa) or (lang xa)) hoi. hieu hien ((cac lao) OR (ca lao)) va dinh ve cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (lang xa)) hoi. hieu hien ((cac lao) OR (ca lao)) va dinh ve cua tre*.