Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
canh thanh » canh tranh, danh thanh, anh thanh
thuat tran » thuat trang, thuat toan, thuat than
thanh kxy » thanh ky, than ky, thanh tay
kxy thuat » ky thuat, ki thuat, ky thua
tran khoa » toan khoa, san khoa, nhan khoa
thu sach » tu sach, thuat sach, thu hoach
my thuat » ky thuat, ki thuat, va thuat
thuat co » thuat do, thuat o
ngan my » nhan my, nganh ma, nganh ky
tu canh » thu canh, tu chanh, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((thu sach) OR (thuoc sach)) ngan my thuat co hoc ) or ( tu canh thanh kxy thuat tran khoa ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((thu sach) OR (thuoc sach)) ngan my thuat co hoc ) OR ( tu canh thanh kxy thuat tran khoa ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((thu sach) OR (thuoc sach)) ngan my thuat co hoc ) or ( tu canh thanh kxy thuat tran khoa ))*".