Perhaps you should try some spelling variations:
thuoc phien » thuc hien, phuoc hien, thuat phien
hoc phien » hoc nghien, hoc phan, hoc thieu
phien nam » hien nay, phien ban, vien nam
doanh ha » doanh va, doanh khoa, doanh nhan
dong hoc » dong co, dong luc
hien nam » hien nay, vien nam, mien nam
danh tac » canh tac, doanh tai, danh thuc
tac dung » xay dung, tin dung, van dung
dung hoc » trung hoc, dung khoa, dung cho
danh bac » doanh bac, danh bat, dang bac
bac dung » ban dung, cach dung, bac cuong
ha dong » hoat dong, van dong
dan bac » dan ba, van bac, dong bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( doanh ha dong hoc hien nam ) or ((((( danh tac dung hoc phien nam ) or ( mang sach dung hoc phien nam ))) or ((( danh bac dung thuoc phien nam ) or ( dan bac dung thuoc phien nam ))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( doanh ha dong hoc hien nam ) OR ((((( danh tac dung hoc phien nam ) OR ( mang sach dung hoc phien nam ))) OR ((( danh bac dung thuoc phien nam ) OR ( dan bac dung thuoc phien nam )))))).
• Adding a wildcard symbol may retrieve word variants: (( doanh ha dong hoc hien nam ) or ((((( danh tac dung hoc phien nam ) or ( mang sach dung hoc phien nam ))) or ((( danh bac dung thuoc phien nam ) or ( dan bac dung thuoc phien nam ))))))*.