Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
lang van » dang van, tang van, hoang van
nhan luc » nang luc
su sach » so sach, vu sach
van hoi » van hoa, van hoc, van hoe
va hanh » van hanh, va thanh, va danh
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
cua te » cua tu

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 o lang van hoi. ((hieu quan) OR (hieu qua)) nhan luc va hanh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: su sach o lang van hoi. ((hieu quan) or (hieu qua)) nhan luc va hanh vi cua te*.