Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
ban hang » ngan hang
hang hai » hoang hai, hang tai, thanh hai
hieu va » lieu va, hieu qua
dao xuc » dao duc, dao tuc, dao xu
xuc ban » duc ban, cuc ban, quoc ban
vu sach » vu bach, vu khach
su sach » so sach
va dao » ca dao
hai va » hai van, thai va, hoi va
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) ky nang ((x hoi) OR (xa hoi)). hieu va dao xuc ban hang hai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang ((x hoi) OR (xa hoi)). hieu va dao xuc ban hang hai va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ky nang ((x hoi) OR (xa hoi)). hieu va dao xuc ban hang hai va triet*".