Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lam thuc » lam thuoc, am thuc, nam thuc
tinh vai » tinh va, tinh hai, tinh bai
va triet » va thiet, va trien, ve triet
te sach » toc sach
mai hoi » mai khoi, dai hoi, lai hoi
van lam » van nam
thuc va » thuc vat, thuc dan, thuc day
va tinh » may tinh
y nang » ky nang, ly nang, v nang
ma hoi » xa hoi, ma hoa, me hoi
vai va » mai va, dai va, hai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ((ma hoi) OR (mai hoi)). hieu van lam thuc va tinh vai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((ma hoi) OR (mai hoi)). hieu van lam thuc va tinh vai va triet".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) OR (mai hoi)). hieu van lam thuc va tinh vai va triet*.