Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hinh thai » sinh thai, tinh thai, dinh thi
van hinh » van chinh, van thinh, van minh
thai cuu » thai cua, tai cuc, thi cuc
hieu ve » hieu va, hieu van
ve chao » ve chat, ve cham, ve cho
cuu tre » cua tre, cau tren, cau treo
y sang » _ sang, duy sang
xu van » tu van, vu van, su van

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y sang ((ma hoa) or (xa hoi)). hieu ve chao xu van hinh thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y sang ((ma hoa) OR (xa hoi)). hieu ve chao xu van hinh thai cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y sang ((ma hoa) or (xa hoi)). hieu ve chao xu van hinh thai cuu tre*.