Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cham tuc » nham thuc, pham thuc, tham thuc
hieu va » lieu va, hieu qua
te sach » toc sach
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
va dan » va dao, va dau, va dap
ca dan » cac dan, ca dao
vi su » va su, ve su, ki su

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: te sach v nang xa hoi. ((hieu ve) OR (hieu va)) cham tuc ((va dan) OR (ca dan)) vi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang xa hoi. ((hieu ve) or (hieu va)) cham tuc ((va dan) OR (ca dan)) vi su triet~".
• Adding a wildcard symbol may retrieve word variants: te sach v nang xa hoi. ((hieu ve) or (hieu va)) cham tuc ((va dan) OR (ca dan)) vi su triet*.