Perhaps you should try some spelling variations:
hau treo » cau treo, cau theo, dau tren
hieu van » hieu va, thien van, lieu va
danh hai » dang hai, lanh hai, manh hai
cam thuc » am thuc, nam thuc, cam thu
nang ma » tang ma, sang ma, nang cao
sach ly » sach y, sach lo, sach ty
van cam » van nam, van lam, van cau
nang xa » nang x, lang xa, mang xa
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
hai hau » hai chau, dai hau, hai hai
su sach » so sach, vu sach

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 ly ((nang xa) OR (nang ma)) hoi. hieu van cam thuc va danh hai hau treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ly ((nang xa) OR (nang ma)) hoi. hieu van cam thuc va danh hai hau treo".
• Adding a wildcard symbol may retrieve word variants: su sach ly ((nang xa) OR (nang ma)) hoi. hieu van cam thuc va danh hai hau treo*.