Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
truong cua » truong ca, truong quan, huong cua
truong cao » truong dai
tong cong » trong cong, cong cong, dung cong
tap doanh » tap doan, lap doanh, tap danh
cong tap » cuong tap, cong tac, cong tan
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((trieu tinh) or (chieu sang)) - hanh ((truong cua) OR (truong cao)) tong cong tap doanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((trieu tinh) OR (chieu sang)) - hanh ((truong cua) OR (truong cao)) tong cong tap doanh tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((trieu tinh) or (chieu sang)) - hanh ((truong cua) OR (truong cao)) tong cong tap doanh tai".
• Adding a wildcard symbol may retrieve word variants: hoc ((trieu tinh) or (chieu sang)) - hanh ((truong cua) OR (truong cao)) tong cong tap doanh tai*.