Perhaps you should try some spelling variations:
khoa tieng » thoai tieng, hoc tieng, khoa tinh
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hang khoa » dung khoa
tieng ket » tieng viet, thien ket, lien ket
luan tieu » luan thiet
ban hang » ngan hang
ket luan » ket qua, te luan, dat luan
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 luan tieu chuan (kinh or dinh) doanh hoan thien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ban hang khoa tieng ket luan tieu chuan (kinh OR dinh) doanh hoan thien.
• Adding a wildcard symbol may retrieve word variants: ban hang khoa tieng ket luan tieu chuan (kinh or dinh) doanh hoan thien*.