Perhaps you should try some spelling variations:
tay lang » tay tang, tay quang, tham lang
tai lang » tai cong, thi lan, tai san
hieu van » hieu va, thien van, lieu va
danh sai » dung sai, danh bat, danh dau
ve triet » va trien, su triet
te sach » toc sach
nam xua » nam cua, nam mua, nam qua
va danh » va dinh, va dan, va hanh
xua va » xuat va, vua va, sua va
cua te » cua tu

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 ((tay lang) OR (tai lang)) xa hoi. hieu van nam xua va danh sai ((ve triet) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tay lang) OR (tai lang)) xa hoi. hieu van nam xua va danh sai ((ve triet) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: te sach ((tay lang) OR (tai lang)) xa hoi. hieu van nam xua va danh sai ((ve triet) or (cua te))*.