Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu sang » chieu sang, thieu quang, hieu lang
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
trung cap » truong cao, trung tam
tong cong » trong cong, cong cong, dung cong
van van » tan van, san van, van vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) or (thieu khang)) - manh trung cap ((nhung cong) or (tong cong)) van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu khang)) - manh trung cap ((nhung cong) OR (tong cong)) van van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thieu khang)) - manh trung cap ((nhung cong) or (tong cong)) van van ban*.