Perhaps you should try some spelling variations:
nang viet » anh viet
danh viet » anh viet, ninh viet, dao viet
toc sac » toc sach, toc san, hoc sach
cac tao » cau tao, cac tro, cac tac
hieu ve » hieu va, hieu van
mang xa » lang xa, mang may, dang xay
tang ma » mang may, tang van
ca theo » cau theo, va theo, chan theo
sac ky » cac ky, sai ky
ve cac » va cac, vien cac

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: toc sac ky ((mang xa) OR (tang ma)) hoi. hieu ve cac tao va ((danh viet) OR (nang viet)) ca theo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky ((mang xa) or (tang ma)) hoi. hieu ve cac tao va ((danh viet) OR (nang viet)) ca theo~".
• Adding a wildcard symbol may retrieve word variants: toc sac ky ((mang xa) or (tang ma)) hoi. hieu ve cac tao va ((danh viet) OR (nang viet)) ca theo*.