Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cam thuc » am thuc, nam thuc, cam thu
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. lieu va cam thuc van hanh vi ((cua triet) OR (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. lieu va cam thuc van hanh vi ((cua triet) OR (cua viet))*.