Perhaps you should try some spelling variations:
nuoc luan » luc luan
cua triet » cua viet, su triet, va triet
cau thuc » cuu thuc, can thuc, cau phuc
van hanh » van thanh, ban hanh, van anh
luan ky » luan y, xuan ky, luan ket
hieu ve » hieu va, hieu van
hanh le » thanh le, hanh ve, hanh de
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc luan ky nang x ho. hieu ve ((cau thuc) or (cau truc)) van hanh le cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc luan ky nang x ho. hieu ve ((cau thuc) OR (cau truc)) van hanh le cua triet.
• Adding a wildcard symbol may retrieve word variants: nuoc luan ky nang x ho. hieu ve ((cau thuc) or (cau truc)) van hanh le cua triet*.