Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
hanh hai » thanh hai, nhanh hai, hang hai
hai cau » hai chau, hai chu, hai hau
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
qua cac » cua cac
su sach » so sach, vu sach
y nang » ky nang, ly nang, may nang
xuc va » duc va, tuc va, luc va
v nang » va nang, vu nang, van nang
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: su sach ((y nang) OR (v nang)) ((o hoi) or (o hai)). hieu qua cac xuc va hanh hai cau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (v nang)) ((o hoi) OR (o hai)). hieu qua cac xuc va hanh hai cau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) OR (v nang)) ((o hoi) or (o hai)). hieu qua cac xuc va hanh hai cau triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) OR (v nang)) ((o hoi) or (o hai)). hieu qua cac xuc va hanh hai cau triet*.