Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
chieu sang » chieu sach, chieu xanh, nhieu tang
trinh toan » tinh toan, thanh toan, trinh han
hieu lang » hieu quang, nhieu tang, hieu van
toan dang » tran dang, toan mang, toan tang
dang cong » dung cong
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) OR (hieu lang)) - canh trinh toan dang cong doan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (hieu lang)) - canh trinh toan dang cong doan phan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (hieu lang)) - canh trinh toan dang cong doan phan cau*.