Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
doc sach » hoc sach, toc sach, nuoc sach
thuoc va » thuc va, thuoc ma, thuong va
cau treo » cau theo, cau tren, cau triet
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sach ky » sac ky, sach y, sach ty
dan vai » dan tai, dan vat, den vai
cuu tre » cua tre, cau tren
va nha » va nho, ve nha
dan va » doan va, dan ca, ban va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach ky lang xa hoi. hieu va nha thuoc va ((dan vai) or (dan va)) ((cuu tre) OR (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ky lang xa hoi. hieu va nha thuoc va ((dan vai) OR (dan va)) ((cuu tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ky lang xa hoi. hieu va nha thuoc va ((dan vai) or (dan va)) ((cuu tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: doc sach ky lang xa hoi. hieu va nha thuoc va ((dan vai) or (dan va)) ((cuu tre) OR (cau treo))*.