Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
danh hai » dang hai, lanh hai, manh hai
lam thuc » lam thuoc, am thuc, nam thuc
sach thu » sach thue, sach thieu, sach tham
sach ha » sach nha, sach han, sach xa
van lam » van nam
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
hai cau » hai chau, hai chu, hai hau

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 ha) or (sach thu)) sang ((ma hoa) or (xa hoi)). hieu van lam thuc va danh hai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ha) OR (sach thu)) sang ((ma hoa) OR (xa hoi)). hieu van lam thuc va danh hai cau treo.
• Adding a wildcard symbol may retrieve word variants: su ((sach ha) or (sach thu)) sang ((ma hoa) or (xa hoi)). hieu van lam thuc va danh hai cau treo*.