Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
dao duc » giao duc, tao duoc
tan anh » tuan anh, tran anh, toan anh
cua tre » cuu tre, cua triet, dua tren
y nang » ky nang, ly nang, v nang
ve dao » de dao, va dao, ve bao
anh va » hanh va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang ((mai hoi) or (xa hoi)). hieu ve dao duc tan anh va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang ((mai hoi) OR (xa hoi)). hieu ve dao duc tan anh va ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang ((mai hoi) or (xa hoi)). hieu ve dao duc tan anh va ((cua tre) or (cua te))*.