Perhaps you should try some spelling variations:
qua nhan » cua nhan, qua nhat, qua phan
nhan luc » nang luc
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoa. hieu qua nhan luc ((va hanh) OR (va danh)) dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoa. hieu qua nhan luc ((va hanh) OR (va danh)) dai cua tre*.