Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
cham luc » cham soc, cham cuu, chat lua
nhan luc » nang luc
su sach » so sach, vu sach
va hanh » van hanh, va danh, ban hanh
sach ky » sac ky, sach y, sach ty
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang o hoi. hieu qua ((cham luc) OR (nhan luc)) ((va hanh) or (va thanh)) dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang o hoi. hieu qua ((cham luc) OR (nhan luc)) ((va hanh) OR (va thanh)) dai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang o hoi. hieu qua ((cham luc) OR (nhan luc)) ((va hanh) or (va thanh)) dai cua te*".