Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nay thuc » nam thuc, cay thuc, day thuc
thuc cac » thuc cach, tuc cac, phuc cac
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
va nay » va ngay, va cay
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang x hoi. hieu va nay thuc cac truong dai ((cuu tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang x hoi. hieu va nay thuc cac truong dai ((cuu tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: so sach ty nang x hoi. hieu va nay thuc cac truong dai ((cuu tre) or (cua triet))*.