Perhaps you should try some spelling variations:
thanh dinh » thanh binh, thanh tinh, thanh vinh
ban thanh » ban hanh, ban hang
cu triet » cua triet, cau triet, su triet
hieu va » lieu va, hieu qua
nam xua » nam cua, nam mua, nam qua
xua ban » xuat ban, cua ban, qua ban
ty nang » ty xang, ty hang, ly nang
dinh cu » dinh cuu, dinh chuc, dinh chau
so sach » so sanh, bo sach, co sach
va nam » van nam, ha nam, va nay
o hoi » co hoi, o hoc, o hoa
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: so sach ((ty nang) or (ky nang)) ((o hoi) OR (o hai)). hieu va nam xua ban thanh dinh cu triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ty nang) OR (ky nang)) ((o hoi) OR (o hai)). hieu va nam xua ban thanh dinh cu triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ty nang) or (ky nang)) ((o hoi) OR (o hai)). hieu va nam xua ban thanh dinh cu triet".
• Adding a wildcard symbol may retrieve word variants: so sach ((ty nang) or (ky nang)) ((o hoi) OR (o hai)). hieu va nam xua ban thanh dinh cu triet*.