Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
cac duc » cao duc, cac dac, cac nuoc
ty hang » ly hang, ty xang, thi hang
hang x » nang x, hoang xa, chang xu

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 ty hang x ho. hieu van ((cac duc) OR (cac du)) va thanh dai ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty hang x ho. hieu van ((cac duc) OR (cac du)) va thanh dai ((cua tre) or (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: te sach ty hang x ho. hieu van ((cac duc) OR (cac du)) va thanh dai ((cua tre) or (cuu tre))*.