Perhaps you should try some spelling variations:
ve triet » va trien, su triet
cau phuc » cau truc, chau phu, huu phuc
nang xay » nganh xay, nang xuan, nang cao
dang xay » dang van, van xay
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cau luc » cau truc
vi ve » va ve, gi ve, ve ve

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xay) OR (dang xay)) hoi. hieu qua ((cau luc) OR (cau phuc)) va danh vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang xay) OR (dang xay)) hoi. hieu qua ((cau luc) or (cau phuc)) va danh vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xay) OR (dang xay)) hoi. hieu qua ((cau luc) or (cau phuc)) va danh vi ve triet*.