Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
chau tinh » cuu tinh, ha tinh, cua tinh
tranh cua » manh cua
doanh cua » doanh luan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 (chau tinh)) - hanh ((tranh cua) or (doanh cua)) thong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chau tinh)) - hanh ((tranh cua) OR (doanh cua)) thong cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chau tinh)) - hanh ((tranh cua) or (doanh cua)) thong cong dan toan cao*.