Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
dinh doi » tinh doi, dinh doc, dinh loi
dinh toi » dinh tri, dinh thi, dinh so
dinh moi » dinh so, dinh tri, dinh thi
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
hau tuc » cau truc, hieu tuc, thai tuc
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
va hau » van hau, va chau, vat hau
tuc va » thuc va, truc va, tuc xa
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: thu sach vu nang x hoi. hieu va hau tuc va ((((dinh doi) OR (dinh moi))) or (dinh toi)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach vu nang x hoi. hieu va hau tuc va ((((dinh doi) OR (dinh moi))) OR (dinh toi)) su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach vu nang x hoi. hieu va hau tuc va ((((dinh doi) OR (dinh moi))) or (dinh toi)) su triet*".