Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hanh hai » thanh hai, nhanh hai, hang hai
cam truc » cau truc, nam truc, lam truoc
hieu van » hieu va, thien van, lieu va
hai cau » hai chau, hai chu, hai hau
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
van cam » van nam, van lam, van cau
su sach » so sach
ly nang » ky nang, ly hang, ly vang
vu sach » vu bach, vu khach
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi

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 sach)) ly nang ((ma hoi) OR (mai hoi)). hieu van cam truc va hanh hai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ly nang ((ma hoi) OR (mai hoi)). hieu van cam truc va hanh hai cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ly nang ((ma hoi) OR (mai hoi)). hieu van cam truc va hanh hai cau treo".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ly nang ((ma hoi) OR (mai hoi)). hieu van cam truc va hanh hai cau treo*.