Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
chat luc » chat xuc, chat lua, nhan luc
danh hai » dang hai, lanh hai, manh hai
hoc sach » hoc sinh, hoc cac, hoc anh
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
va danh » va dinh, va dan, va hanh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (hoc sach)) ((y nang) or (v nang)) xa hoi. hieu ve chat luc va danh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ((y nang) OR (v nang)) xa hoi. hieu ve chat luc va danh hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) ((y nang) or (v nang)) xa hoi. hieu ve chat luc va danh hai cua tre*".