Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
luan dang » luan nang, luan dong, luan tang
luan danh » luan thanh, luan van, luan nang
cong dan » cong san, cong tan, huong dan
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban
hoc tri » hoc tai, hoc trinh, hoc thai
kinh » dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tri kinh - doanh hoan ((luan dang) OR (luan danh)) cong dan ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tri kinh - doanh hoan ((luan dang) OR (luan danh)) cong dan ((toan tai) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tri kinh - doanh hoan ((luan dang) OR (luan danh)) cong dan ((toan tai) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc tri kinh - doanh hoan ((luan dang) OR (luan danh)) cong dan ((toan tai) or (toan tap))*.