Perhaps you should try some spelling variations:
khau thuong » khac thuong, khai thuong, khau thong
thuoc sach » hoc sach, nuoc sach, thuat sach
tai thuoc » tri thuoc, bai thuoc, tac thuoc
phan tong » phan trong, phan cong, han tong
nha khau » nhap khau, nha kham, nha khach
thai tuc » thai thuc, thai thuy, thai hoc
tuc bach » truc bach, trac bach, tuc cac
bach hoa » bach khoa, bach ha, cach hoan
hoa phan » hoa dan, co phan
han tai » hang tai, nhan tai, van tai
tu han » tu nhan, tu hanh, tu phan
tu toc » tu hoc, tu goc, tu tot

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu han tai thuoc sach nha khau thuong ) or ( tu toc thai tuc bach hoa phan tong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu han tai thuoc sach nha khau thuong ) OR ( tu toc thai tuc bach hoa phan tong )).
• Adding a wildcard symbol may retrieve word variants: (( tu han tai thuoc sach nha khau thuong ) or ( tu toc thai tuc bach hoa phan tong ))*.