Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
thanh tung » thanh cong
chua bang » chua nang, chua xang, thuat bang
luong tap » luong tai, luong tham, luong thai
cuong tap » cong tac, luong tai, cong tan
chu bang » thu bang, chuc nang, chu quang
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu quang - thanh tung ((chua bang) OR (chu bang)) ((luong tap) or (cuong tap)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quang - thanh tung ((chua bang) OR (chu bang)) ((luong tap) OR (cuong tap)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu quang - thanh tung ((chua bang) OR (chu bang)) ((luong tap) or (cuong tap)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - thanh tung ((chua bang) OR (chu bang)) ((luong tap) or (cuong tap)) toan ban*.