Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
nam truc » nam truoc, nam thuc, nam trung
sach dao » lanh dao
cam truc » cau truc, lam truoc, nam truoc
nang ma » tang ma, sang ma, nang cao
sach xa » sach nha, sach bai
va hanh » van hanh, va thanh, va danh
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 dao) or (sach xa)) nang ma hoa. hieu qua ((cam truc) or (nam truc)) va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach dao) OR (sach xa)) nang ma hoa. hieu qua ((cam truc) OR (nam truc)) va hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: su ((sach dao) or (sach xa)) nang ma hoa. hieu qua ((cam truc) or (nam truc)) va hanh vai cua triet*.