Perhaps you should try some spelling variations:
lam truoc » lam thuoc, nam truoc, lam truong
cua triet » cua viet, su triet, va triet
cam truc » cau truc, nam truc, nam truoc
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di 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 y nang ma hoi. hieu qua ((cam truc) OR (lam truoc)) va hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoi. hieu qua ((cam truc) OR (lam truoc)) va hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu qua ((cam truc) OR (lam truoc)) va hanh vi cua triet*.