Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
doc sach » toc sach, nuoc sach, dac sac
danh vai » danh sai, danh va, doanh van
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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) or (doc sach)) ky lang xa hoi. hieu va cam xuc va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (doc sach)) ky lang xa hoi. hieu va cam xuc va danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (doc sach)) ky lang xa hoi. hieu va cam xuc va danh vai cua tre*.