Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu lang » thu hang, thu bang, tho lang
phu lang » phap lang, phu khang, phu luong
hieu van » hieu va, thien van, lieu va
lam thuc » lam thuoc, am thuc, nam thuc
danh hai » dang hai, lanh hai, manh hai
van lam » van nam
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((thu lang) or (phu lang)) xa hoi. hieu van lam thuc va danh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((thu lang) OR (phu lang)) xa hoi. hieu van lam thuc va danh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((thu lang) or (phu lang)) xa hoi. hieu van lam thuc va danh hai cua tre*.