Perhaps you should try some spelling variations:
bach tuoc » sach nuoc
doanh dan » doanh ban, doanh van, doanh dao
sach duoc » sach nuoc, sach dao, sach dung
va doanh » van doanh, vay doanh, va danh
hieu van » hieu va, thien van, lieu va
dan cuu » dan cu, dan cua, dan luu
sach ky » sach y, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky, sai ky

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 ky) OR (sac ky)) lang xa hoi. hieu van ((bach tuoc) OR (sach duoc)) va doanh dan cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sac ky)) lang xa hoi. hieu van ((bach tuoc) OR (sach duoc)) va doanh dan cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sac ky)) lang xa hoi. hieu van ((bach tuoc) OR (sach duoc)) va doanh dan cuu tre*.