Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cau phuc » cau truc, chau phu, huu phuc
danh vai » danh sai, danh va, doanh van
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu va » lieu va, hieu qua
cau luc » cau truc
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai 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: hoc sach ky dang xa hoi. hieu va ((cau luc) or (cau phuc)) va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky dang xa hoi. hieu va ((cau luc) OR (cau phuc)) va danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky dang xa hoi. hieu va ((cau luc) or (cau phuc)) va danh vai cua tre*.