Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
canh giac » danh gia, anh giao, canh tac
thanh van » thanh san, thanh phan, thanh nhan
vien nam » vien dai, van nam, hien nay
van hoc » van hoa
anh ta » anh tu, anh va, anh tuan
hoc y » hoc ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((anh ta) or (canh giac)) van hoc ((vien nam) or (viet nam)) ) or ( doanh ((thanh van) or (thanh toan)) hoc y((vien nam) or (viet nam)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((anh ta) OR (canh giac)) van hoc ((vien nam) OR (viet nam)) ) OR ( doanh ((thanh van) OR (thanh toan)) hoc y((vien nam) OR (viet nam)) )).
• Adding a wildcard symbol may retrieve word variants: (( ((anh ta) or (canh giac)) van hoc ((vien nam) or (viet nam)) ) or ( doanh ((thanh van) or (thanh toan)) hoc y((vien nam) or (viet nam)) ))*.