Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van nhan » van phan, van thanh, danh nhan
nhan luc » nang luc
vien cua » dien cua, tien cua, bien cua
cao hoi » cau hoi, co hoi, tao hoi
cao hoc » co hoc, cho hoc, chat hoc
va tinh » may tinh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
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: tu sac ky nang ((cao hoi) or (cao hoc)). hieu van nhan luc va tinh ((vien cua) OR (viec cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((cao hoi) OR (cao hoc)). hieu van nhan luc va tinh ((vien cua) OR (viec cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((cao hoi) or (cao hoc)). hieu van nhan luc va tinh ((vien cua) OR (viec cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((cao hoi) or (cao hoc)). hieu van nhan luc va tinh ((vien cua) OR (viec cua)) triet*.