Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
xa huong » xa phuong, xa muong, ga huong
va huong » va thuong, va phuong, va tuong
va triet » va thiet, va trien, ve triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va cam » va cham, va cac, va cao
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 ky nang x hoi. hieu va cam tuc ((xa huong) or (va huong)) doi ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang x hoi. hieu va cam tuc ((xa huong) OR (va huong)) doi ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang x hoi. hieu va cam tuc ((xa huong) or (va huong)) doi ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang x hoi. hieu va cam tuc ((xa huong) or (va huong)) doi ((cua triet) OR (va triet))*.