Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
van dinh » van minh, van dich, va dinh
te sach » toc sach
dinh di » dinh du, dinh vi, danh di
thu van » thuc van, thuy van, tu van
cac thu » cach thuc, cac thoi
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi
di cuu » di cau, di cua, dinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thieu khang ((ma hoi) OR (mai hoi)). ((hieu va) or (hieu qua)) cac thu van dinh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu khang ((ma hoi) OR (mai hoi)). ((hieu va) OR (hieu qua)) cac thu van dinh di cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thieu khang ((ma hoi) OR (mai hoi)). ((hieu va) or (hieu qua)) cac thu van dinh di cuu tre*".