Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trang cua » tranh cua, trung cua, thang cua
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » 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: doi ((hieu manh) or (chieu sang)) - hanh ((trang cua) or (tang cua)) dung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu sang)) - hanh ((trang cua) OR (tang cua)) dung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (chieu sang)) - hanh ((trang cua) or (tang cua)) dung cong dan toan cau*.