Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
lieu cao » lieu dao, lieu co, kieu cao
chat tuc » chat xuc, luat tuc, chat huu
ban hanh » ban hang
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, dao hanh
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. lieu cao chat tuc ((va danh) OR (((va hanh) OR (ban hanh)))) doi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. lieu cao chat tuc ((va danh) or (((va hanh) OR (ban hanh)))) doi cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. lieu cao chat tuc ((va danh) or (((va hanh) OR (ban hanh)))) doi cua tre*.