Perhaps you should try some spelling variations:
ve triet » va trien, su triet
cao thuc » cao thuoc, bao thuc, can thuc
va triet » va thiet, va trien, cua triet
hanh dai » hanh tai, hanh dao, vanh dai
tru nang » tra nang, tri nang, truc nano
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
te sach » toc sach
hieu va » lieu va, hieu qua
tu nang » tu nong, tu nano, tu lang
va cao » va cac, va co, va dao

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 ((tu nang) or (tru nang)) xa hoi. hieu va cao thuc va hanh dai ((va triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nang) OR (tru nang)) xa hoi. hieu va cao thuc va hanh dai ((va triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nang) or (tru nang)) xa hoi. hieu va cao thuc va hanh dai ((va triet) or (ve triet))*.