Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
thanh tu » hanh tu, nhanh tu, thanh tung
thanh su » thanh sau, hanh su, thanh san
tay lang » tai lang, tay tang, tay quang
cau loc » hau loc, cau hoc, cau luc
su sach » so sach, vu sach
ty lang » ty xang, ty hang, tu lang
qua cau » quan cau, qua cac, qua ca
loc va » hoc va, luc va

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 loc va ((thanh su) OR (thanh tu)) va 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 loc va ((thanh su) OR (thanh tu)) va triet~".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty lang) or (tay lang)) xa hoi. hieu qua cau loc va ((thanh su) OR (thanh tu)) va triet*.