Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
luan thong » luan tuong, luat thong, xuan thong
luan phong » luan phuong, xuan phuong, van phong
hoc thiet » hoc thuyet, hoc hien, toc thieu
hoc thieu » toc thieu, hoc hien
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (hoc thieu)) tach - hanh doanh ((luan thong) OR (luan phong)) cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (hoc thieu)) tach - hanh doanh ((luan thong) OR (luan phong)) cong van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thiet) or (hoc thieu)) tach - hanh doanh ((luan thong) OR (luan phong)) cong van toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (hoc thieu)) tach - hanh doanh ((luan thong) OR (luan phong)) cong van toan ban*.