Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
hanh nang » ganh nang, anh nang, hanh mang
hoc khong » hoa khong, hoc hong, khoi khong
tan doanh » van doanh, san doanh, ban doanh
nang hoc » nang doc, nang luc, dong hoc
toan » tran

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh nang hoc khong cong ((tan doanh) or (toan doanh)) bao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh nang hoc khong cong ((tan doanh) OR (toan doanh)) bao.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh nang hoc khong cong ((tan doanh) or (toan doanh)) bao*.