Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
manh tran » manh toan, manh tuan, canh tranh
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
van khang » van khanh, van thanh, van quang
khang ban » hang ban, khang benh, khang chan

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 khang - manh tran tuan ((nhung cong) or (dung cong)) van khang ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - manh tran tuan ((nhung cong) OR (dung cong)) van khang ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - manh tran tuan ((nhung cong) or (dung cong)) van khang ban*.