Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
ve triet » va trien, su triet
dang xay » dang van, van xay
va thanh » gia thanh, va tinh, le thanh
cau luc » cau truc, cau phuc
su sach » so sach, vu sach
cam luc » cam xuc
xay hoi » xa hoi, tay hoi, cay phoi
y dang » ky dang, 2 dang, _ dang
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 y dang xay hoi. hieu qua ((cam luc) OR (cau luc)) ((va thanh) OR (ban thanh)) vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y dang xay hoi. hieu qua ((cam luc) or (cau luc)) ((va thanh) OR (ban thanh)) vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: su sach y dang xay hoi. hieu qua ((cam luc) or (cau luc)) ((va thanh) OR (ban thanh)) vi ve triet*.