Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
lam thuc » lam thuoc, am thuc, nam thuc
cau tren » cu tren, dau tren, ca tren
danh hai » dang hai, lanh hai, manh hai
hieu van » hieu va, thien van, lieu va
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
sach lo » sach dao, sach doi, sach hoi
nang ma » tang ma, sang ma, nang cao
van lam » van nam
ma hoi » mai hoi, xa hoi, ma hoa

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 lo) or (sach y)) nang ma hoi. hieu van lam thuc va danh hai ((cau tren) or (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach lo) OR (sach y)) nang ma hoi. hieu van lam thuc va danh hai ((cau tren) OR (cau theo)).
• Adding a wildcard symbol may retrieve word variants: su ((sach lo) or (sach y)) nang ma hoi. hieu van lam thuc va danh hai ((cau tren) or (cau theo))*.