Perhaps you should try some spelling variations:
luan thang » luan thanh, xuan thang, luan tang
hien nhanh » thien thanh, tien thanh, dien thanh
hien hanh » dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong doan » cong hoan, dong doanh, cong san
cong dan » cong san, cong tan, huong dan
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 ((hien nhanh) OR (hien hanh)) - hanh tang luan thang ((cong doan) or (cong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (hien hanh)) - hanh tang luan thang ((cong doan) OR (cong dan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien nhanh) OR (hien hanh)) - hanh tang luan thang ((cong doan) or (cong dan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) OR (hien hanh)) - hanh tang luan thang ((cong doan) or (cong dan)) toan ban*.