Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac truc » cau truc, cac tru, cac trung
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
hieu va » hieu qua
hanh co » anh co, danh co, hanh mo
y nang » ky nang, ly nang, v nang
me hoi » le hoi
co cua » con cua, ca cua, cong cua

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 y nang ((me hoi) or (ma hoa)). ((hieu va) or (lieu va)) cac truc van hanh co cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((me hoi) OR (ma hoa)). ((hieu va) OR (lieu va)) cac truc van hanh co cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((me hoi) or (ma hoa)). ((hieu va) or (lieu va)) cac truc van hanh co cua triet*.