Perhaps you should try some spelling variations:
sach tranh » canh tranh
tac trong » cay trong, hoc trong
tranh cua » doanh cua, manh cua
benh khoa » benh kho, benh khong, benh hoc
phu thong » pho thong, phap thong, khau thong
cach thu » cach thuc, cac thu, cach tu
cac cong » cua cong
cong tac » cong ty
cua benh » chua benh, cua ban, cac benh
khoa phu » khoa phau, khoa thu, hoa phu
tu cach » tu cac
thu tue » thu thue, thu tuc, thu tu
tue cac » tu cac, tuc cac, te cac
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 cach thu tue cac cong tac trong ) or ( te sach tranh cua benh khoa phu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach thu tue cac cong tac trong ) OR ( te sach tranh cua benh khoa phu thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu cach thu tue cac cong tac trong ) or ( te sach tranh cua benh khoa phu thong ))*.