Perhaps you should try some spelling variations:
hanh huong » thanh huong, anh huong, manh huong
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
huong cua » dung cua
cua nhung » va nhung
hach toan » thanh toan
manh toan » thanh toan, anh tuan, tinh toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sang)) - hanh huong cua nhung cong ((hach toan) OR (manh toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sang)) - hanh huong cua nhung cong ((hach toan) OR (manh toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sang)) - hanh huong cua nhung cong ((hach toan) OR (manh toan)) cau*.