Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lap thuc » tap thuc, luan thuc, phap thuc
sach ky » sac ky, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
va lap » va dap

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sach y)) lang xa hoi. hieu va lap thuc va hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) lang xa hoi. hieu va lap thuc va hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) lang xa hoi. hieu va lap thuc va hanh vi ((cua tre) or (cua triet))*.