Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
hoc sach » hoc sinh, hoc cac, hoc anh
hieu ve » hieu va, hieu van
lua tre » cua tre, luy tre, dua tren
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va
vi lua » vi luu
ma hoi » mai hoi, xa hoi, ma hoa

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) OR (hoc sach)) ((y nang) OR (v nang)) ma hoi. hieu ve cam xuc va dan vi lua tre~.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) ((y nang) or (v nang)) ma hoi. hieu ve cam xuc va dan vi lua tre*.