Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
hai cau » hai chau, hai chu, hai hau
va danh » va dinh, va hanh, dia danh
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
van lam » van nam
ma hoi » mai hoi, xa hoi, me hoi
va dan » ca dan, va dao, va dau

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