Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
hanh thang » nhanh thang, thanh thang, hanh trang
doanh hoan » doanh doanh, doanh nhan, doanh luan
tieu xanh » tieu danh, chieu xanh, dieu hanh
thang va » hang va, trang va, thong va
va dung » van dung, va duong, vat dung
toan » tran

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - hanh thang va dung phuong ((doanh hoan) or (((doanh khoa) OR (toan khoa)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh thang va dung phuong ((doanh hoan) OR (((doanh khoa) OR (toan khoa)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh thang va dung phuong ((doanh hoan) or (((doanh khoa) OR (toan khoa)))) cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh thang va dung phuong ((doanh hoan) or (((doanh khoa) OR (toan khoa)))) cau*.