Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, hieu lang, nhiet nang
nhung hong » nhung chong, nhung huong, nhung phong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
hong ban » hong bang, hoang ban, phong ban
ban quan » van quan
quan ban » quang ban, qua ban, quan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((nhieu tang) or (hieu qua)) - thanh trung cua nhung hong ban quan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nhieu tang) OR (hieu qua)) - thanh trung cua nhung hong ban quan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((nhieu tang) or (hieu qua)) - thanh trung cua nhung hong ban quan ban*.