Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhan luc » nang luc
vu sach » vu bach, su sach, vu khach
va hanh » van hanh, va thanh, va danh
va nhan » van nhan, ca nhan, va phan
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
su tien » su kien, su hien, tu tieng
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y ((nang xa) or (nang ma)) hoi. lieu va nhan luc va hanh vi ((cua triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (nang ma)) hoi. lieu va nhan luc va hanh vi ((cua triet) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (nang ma)) hoi. lieu va nhan luc va hanh vi ((cua triet) or (su tien))*.