Perhaps you should try some spelling variations:
tranh trong » tran trong, trinh trong, anh trong
hieu lang » chieu sang, hieu quang, nhieu tang
trong van » trong cac
bang than » bang thanh, ban than, bang nhan
sang than » cang thang, dang thanh, sang tao
van dung » van dong, xay dung, tin dung
ho hieu » ho chieu, hoi hieu, nho hieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - tranh trong van dung trong ((bang than) OR (sang than)) man~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - tranh trong van dung trong ((bang than) or (sang than)) man*.