Perhaps you should try some spelling variations:
cham luc » nhan luc, cham cuu, chat lua
hanh doi » thanh doi, hanh noi, hang doi
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. hieu qua ((cham luc) OR (cham soc)) va hanh doi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu qua ((cham luc) OR (cham soc)) va hanh doi cuu tre*.