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