Perhaps you should try some spelling variations:
cuc phuong » cac phuong, cuu phuong, cua phuong
cong doanh » cong danh, dong doanh, rong doanh
thanh tung » thanh cong
hieu sang » chieu sang, hieu lang, hieu quang
cong doan » cong dan, cong hoan, dong doanh
doc hieu » toc thieu, hoc thieu, hoc hien
lanh ban » lanh bang, lang ban, doanh ban
ban cuc » ban cua, van cuc, ban cung

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 sang - lanh ban cuc phuong ((cong doanh) or (cong doan)) thanh tung~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - lanh ban cuc phuong ((cong doanh) OR (cong doan)) thanh tung*.