Perhaps you should try some spelling variations:
trien thuoc » trien thuc, trien thuong, tin thuoc
sach trien » sach tien, sach tren, sach thieu
thuoc tich » thuoc tinh, thu tich, thuc tinh
khau thong » khau thuong, khap thong, khau tong
tich hoat » sinh hoat
pho thong » he thong
sach hiep » sach nghiep, sach thieu, sach tien
hiep tran » hien trang
khoa khau » khoa kham, khoa phau, khoa chau
hoat pho » hoat ho, hoc pho, hoa phi
tran anh » tran manh, tuan anh, tran thanh
anh khoa » doanh khoa, hang khoa
tu sach » thu sach, su sach, tu cach
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach trien thuoc tich hoat pho thong ) or ( te sach hiep tran anh khoa khau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach trien thuoc tich hoat pho thong ) OR ( te sach hiep tran anh khoa khau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach trien thuoc tich hoat pho thong ) or ( te sach hiep tran anh khoa khau thong ))*.