Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
su triet » su viet, su tien, ve triet
nam quoc » nam duoc, nam buoc, nam thuoc
cam quoc » cac quoc, cao quoc, han quoc
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
cuu tre » cua tre, cau tren, cau treo
su sach » so sach, vu sach

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 ty xang xa hoi. lieu va ((cam quoc) OR (nam quoc)) ban thanh vai ((cuu tre) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang xa hoi. lieu va ((cam quoc) OR (nam quoc)) ban thanh vai ((cuu tre) or (su triet))~".
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. lieu va ((cam quoc) OR (nam quoc)) ban thanh vai ((cuu tre) or (su triet))*.