Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hieu lang » chieu sang, hieu quang, nhieu tang
dan thanh » dang thanh, danh thanh, ban thanh
thanh ban » thanh san, thanh van, thanh bac
hang ban » hang luan, hang va, hang tai
cua hang » cua dang, cua nhung, cua ban
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu nganh) or (hieu lang)) - hang ban ((cua hang) OR (cua cong)) cong dan thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (hieu lang)) - hang ban ((cua hang) OR (cua cong)) cong dan thanh ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu nganh) or (hieu lang)) - hang ban ((cua hang) OR (cua cong)) cong dan thanh ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (hieu lang)) - hang ban ((cua hang) OR (cua cong)) cong dan thanh ban*.