Perhaps you should try some spelling variations:
xuan nguyen » toan nguyen, tran nguyen, hoang nguyen
phuong cong » phuong dong, phong cong, phuong hoang
dung doanh » dung dan, dung dong
phung cong » phong cong, nhung chong, dung cong
nhung cong » dung cong, thong cong, hang cong
nguyen tap » nguyen tac, nguyen tan, nguyen tat
hien tinh » khien tinh, thien tinh, bien tinh
doanh cua » doanh luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tinh - dung doanh cua ((phuong cong) or (((phung cong) OR (nhung cong)))) xuan nguyen tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - dung doanh cua ((phuong cong) OR (((phung cong) OR (nhung cong)))) xuan nguyen tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tinh - dung doanh cua ((phuong cong) or (((phung cong) OR (nhung cong)))) xuan nguyen tap".
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - dung doanh cua ((phuong cong) or (((phung cong) OR (nhung cong)))) xuan nguyen tap*.