Perhaps you should try some spelling variations:
trung doanh » trong doanh, trung thanh, trung anh
dung doanh » dung dan, dung dong
chung cong » nhung cong, chong cong, phung cong
hieu lang » chieu sang, hieu quang, nhieu tang
cong tinh » cong trinh, cong vinh, long tinh
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh ((trung doanh) or (dung doanh)) chung cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh ((trung doanh) OR (dung doanh)) chung cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh ((trung doanh) or (dung doanh)) chung cong tinh toan ban*.