Perhaps you should try some spelling variations:
canh thuc » anh thuc, cach thuc, danh thuc
danh khoa » doanh khoa, anh khoa, danh hoa
thu canh » thuc hanh, thu cong, thu ban
cuu cong » cua cong, thu cong, cac cong
cong coc » cong cuoc, cong cac, cong co
coc danh » hoc danh, cuon danh, chuc danh
khoa hoc » hoa hoc
cao phan » co phan, cho phan, cac phan
ca phan » cac phan, cap phan, cau phan
ma hoi » mai hoi, xa hoi, ma hoa

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "thu canh thuc vat, nghien cuu cong coc danh khoa hoc ma hoi ((ca phan) OR (cao phan)) van~".
• Adding a wildcard symbol may retrieve word variants: thu canh thuc vat, nghien cuu cong coc danh khoa hoc ma hoi ((ca phan) OR (cao phan)) van*.