Perhaps you should try some spelling variations:
ve triet » va trien, su triet
thanh vu » thanh va, thanh ve, thanh tu
va thanh » gia thanh, ban thanh, va tinh
tay lang » tai lang, tay tang, tay quang
cau phuc » chau phu, huu phuc, van phuc
su sach » so sach, vu sach
ty lang » ty xang, ty hang, tu lang
vu ve » vu le, vu va, su 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 ((ty lang) OR (tay lang)) xa hoi. hieu qua ((cau phuc) OR (cau truc)) va thanh vu ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty lang) OR (tay lang)) xa hoi. hieu qua ((cau phuc) or (cau truc)) va thanh vu ve triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty lang) OR (tay lang)) xa hoi. hieu qua ((cau phuc) or (cau truc)) va thanh vu ve triet*.