Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
khoa tieng » thoai tieng, hoc tieng, khoa tinh
hang khoa » dung khoa
tieng ket » tieng viet, thien ket, lien ket
cau trieu » cac trieu, cau triet, chua trieu
ban hang » ngan hang
thi kinh » thi minh, thi hinh, thi binh
thien » thieu, tien, hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ban hang khoa tieng ket cau trieu ((thi kinh) OR (tri kinh)) doanh hoan thien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ban hang khoa tieng ket cau trieu ((thi kinh) OR (tri kinh)) doanh hoan thien".
• Adding a wildcard symbol may retrieve word variants: ban hang khoa tieng ket cau trieu ((thi kinh) OR (tri kinh)) doanh hoan thien*.