Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
tham tuc » tham thuc, thai tuc, nham thuc
dinh dau » dinh dat, dinh du, danh dau
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
va dinh » van dinh, va kinh, va tinh
dau cua » dai cua, day cua, cau cua
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang xa hoi. ((thien van) or (thi van)) tham tuc va dinh dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang xa hoi. ((thien van) OR (thi van)) tham tuc va dinh dau cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. ((thien van) or (thi van)) tham tuc va dinh dau cua tre*.