Perhaps you should try some spelling variations:
doanh nang » doanh sang, doanh nhung, doanh quang
thuong han » thuong mai, thuong va, thuong gap
thuong dam » thuong mai, huong dan, truong dai
hieu lang » chieu sang, hieu quang, nhieu tang
doc hieu » toc thieu, hoc thieu, hoc hien
luc cong » luoc cong, duc cong, luc dong
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - doanh nang luc cong ((thuong han) or (thuong dam)) khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - doanh nang luc cong ((thuong han) OR (thuong dam)) khan cap.
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - doanh nang luc cong ((thuong han) or (thuong dam)) khan cap*.