Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hai chau » lai chau, ha chau, hat chau
lam thuc » lam thuoc, am thuc, nam thuc
van lam » van nam
thuc va » thuc vat, thuc dan, thuc day
va lanh » va lang, va danh, va hanh
hai cau » hai chu, hai hau, hoi cau
ly nang » ky nang, ly hang, ly vang
ma hoi » mai hoi, ma hoa, me hoi
bach » sach, cach, bac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ly nang ((ma hoi) or (xa hoi)). hieu van lam thuc va lanh ((hai cau) or (hai chau)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ly nang ((ma hoi) OR (xa hoi)). hieu van lam thuc va lanh ((hai cau) OR (hai chau)) treo.
• Adding a wildcard symbol may retrieve word variants: vu bach ly nang ((ma hoi) or (xa hoi)). hieu van lam thuc va lanh ((hai cau) or (hai chau)) treo*.