Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
van dinh » van minh, van dich, xuan dinh
te sach » toc sach
va dinh » va kinh, va tinh, vu dinh
cac thu » cach thuc, cac thoi
hieu va » lieu va
khang a » chang ha, khan gia, khang cu
cuu tre » cua tre, cau tren, cau treo
du cuu » tu cuu
a hoi » xa hoi, va hoi, o hoi

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