Perhaps you should try some spelling variations:
qua nhan » cua nhan, qua nhat, qua phan
nhan luc » nang luc
hanh doi » thanh doi, hanh noi, hang doi
su sach » vu sach
so sach » so sanh, bo sach, co sach
sang ma » tang ma, nang ma, sang tao
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
y sang » _ sang, duy sang
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va

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: ((su sach) OR (so sach)) y sang ma hoi. hieu qua nhan luc va hanh doi cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) y sang ma hoi. hieu qua nhan luc va hanh doi cua tre*.