Perhaps you should try some spelling variations:
thanh moi » thanh loi, thanh hoa, thanh hai
ban thanh » ban hanh, ban hang
moi quan » mai quan, hai quan, co quan
luc ban » duc ban, cuc ban, luc bat
dau luc » cau luc, dau luan, dau nuoc
hieu va » lieu va, hieu qua
va dau » va dao
pu bac » xu bac, pu xac, tu bac
du bac » duy bac, du bao, xu bac
x hoi » xa hoi, o hoi, x ho
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((pu bac) OR (du bac)) ky nang ((x hoi) or (o hai)). hieu va dau luc ban thanh moi quan tri~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((pu bac) OR (du bac)) ky nang ((x hoi) OR (o hai)). hieu va dau luc ban thanh moi quan tri.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((pu bac) OR (du bac)) ky nang ((x hoi) or (o hai)). hieu va dau luc ban thanh moi quan tri".
• Adding a wildcard symbol may retrieve word variants: ((pu bac) OR (du bac)) ky nang ((x hoi) or (o hai)). hieu va dau luc ban thanh moi quan tri*.