Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hoc thien » hoc hien, hoc thieu, hoc thiet
dang cong » dung cong
toan phan » thanh phan, toan ban, hoa phan
hoan cua » hoa cua, toan cua, han cua
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - doanh hoan cua ((thanh cong) or (dang cong)) toan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - doanh hoan cua ((thanh cong) OR (dang cong)) toan phan dau.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - doanh hoan cua ((thanh cong) or (dang cong)) toan phan dau*.