Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
xa huong » xa phuong, va huong, ga huong
nam thuc » nam thuoc, am thuc, nam thu
xa muong » ca muong, xa truong, xa dong
cua tre » cua te, cuu tre, cua triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
va nam » van nam, ha nam, va nay

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 ky nang xa hoi. hieu va nam thuc ((xa huong) or (xa muong)) doi ((cua tre) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang xa hoi. hieu va nam thuc ((xa huong) OR (xa muong)) doi ((cua tre) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. hieu va nam thuc ((xa huong) or (xa muong)) doi ((cua tre) or (va triet))*.