Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
thang manh » thang thanh, thanh anh, hoang manh
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
manh toan » thanh toan, anh tuan, tinh toan
doi hieu » doi chieu, doc hieu, doi hien
toan ban » van ban
luat » luan, xuat

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - hanh ((trinh luat) or (doanh cua)) cang thang manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - hanh ((trinh luat) OR (doanh cua)) cang thang manh toan ban*.