Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh hai » thanh hai, nhanh hai, hang hai
cau treo » cau theo, cau tren, cau triet
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly vang
nam xuc » cam xuc, nam xua, nam thuc
va hanh » van hanh, va thanh, va danh
hai cau » hai chau, hai chu, hai hau
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
bach » cach, bac

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 bach)) ly nang ((ma hoi) or (xa hoi)). hieu van nam xuc va hanh hai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu bach)) ly nang ((ma hoi) OR (xa hoi)). hieu van nam xuc va hanh hai cau treo.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu bach)) ly nang ((ma hoi) or (xa hoi)). hieu van nam xuc va hanh hai cau treo*.