Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
danh hoi » danh hoa, dan hoi, danh hoc
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
hoi cua » hoi chuc
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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 ((y nang) OR (v nang)) cau hoi. hieu ve cam xuc va danh hoi cua tu~.
• Adding a wildcard symbol may retrieve word variants: toc sach ((y nang) or (v nang)) cau hoi. hieu ve cam xuc va danh hoi cua tu*.