Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
hieu va » lieu va, hieu qua
su sac » su sach, su cac, su xac
luc va » duc va, tuc va, loc va
xuc va » duc va, tuc va, xac va
sac ky » cac ky, sai ky
va bao » va bai
nang o » nang co, nang ho, nang ro
cua tu » cua tuc, cua su, cua cu
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 sac ky nang o hoi. hieu va bao ((xuc va) or (luc va)) hanh tri ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang o hoi. hieu va bao ((xuc va) OR (luc va)) hanh tri ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: su sac ky nang o hoi. hieu va bao ((xuc va) or (luc va)) hanh tri ((cua te) or (cua tu))*.