Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
van dinh » van minh, van dich, va dinh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
cam luc » cau luc
vai cua » dai cua, hai cua, lai cua

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 cao hoi. hieu qua ((cam luc) OR (cam xuc)) ((va thanh) or (van dinh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang cao hoi. hieu qua ((cam luc) OR (cam xuc)) ((va thanh) OR (van dinh)) vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang cao hoi. hieu qua ((cam luc) OR (cam xuc)) ((va thanh) or (van dinh)) vai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang cao hoi. hieu qua ((cam luc) OR (cam xuc)) ((va thanh) or (van dinh)) vai cua triet*.