Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
trinh toan » tinh toan, thanh toan, trinh han
huong cong » luong cong, duong cong, cuong cong
trinh van » trinh han, trinh quan, dinh van
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan

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 xanh) or (chieu sang)) - canh ((trinh van) OR (trinh toan)) huong cong doan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - canh ((trinh van) OR (trinh toan)) huong cong doan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sang)) - canh ((trinh van) OR (trinh toan)) huong cong doan phan tu".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - canh ((trinh van) OR (trinh toan)) huong cong doan phan tu*.