Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tang » hanh trang, anh tang, hanh mang
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
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: ho ((hieu nganh) or (chieu sang)) - hanh tang cua cong ((cong dan) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu nganh) OR (chieu sang)) - hanh tang cua cong ((cong dan) OR (cong tac)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu nganh) or (chieu sang)) - hanh tang cua cong ((cong dan) or (cong tac)) toan cau*.