Perhaps you should try some spelling variations:
tay tieng » tap tieng, ta tieng, day tieng
toc sach » hoc sach, doc sach, thuoc sach
tay lang » tai lang, tay tang, tay quang
thi van » thi lan, thi hanh, thi nang
nam qua » nam quan, nam cua, nam mua
nam xua » nam cua, nam mua, nam luat
cua tre » cua te, cuu tre, cua triet
va anh » van anh, va danh, va hanh
anh va » hanh va
va cua » va chua, via cua, ca cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((tay lang) or (tay tieng)) xa hoi. thi van ((nam xua) OR (nam qua)) va anh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((tay lang) OR (tay tieng)) xa hoi. thi van ((nam xua) OR (nam qua)) va anh va cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((tay lang) or (tay tieng)) xa hoi. thi van ((nam xua) OR (nam qua)) va anh va cua tre*".