Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dung thai » duong thai, dung tai, dung hai
thai cua » than cua, tai cuc, tri cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ca thuc » can thuc, cay thuc, va thuc
va dung » van dung, va duong, vat dung
ca thu » cac thu, cam thu, ca tru
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: su sach ky nang x hoi. hieu qua ((ca thuc) or (ca thu)) va dung thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu qua ((ca thuc) OR (ca thu)) va dung thai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu qua ((ca thuc) or (ca thu)) va dung thai cua triet*.