Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tang » hanh trang, anh tang, hanh mang
cua trung » cua truong, xuan trung, cua nhung
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, cong dong
phan tap » phan lap, han tap, pha tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (chieu tinh)) - hanh tang cua trung ((cong dan) OR (huong dan)) phan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu nganh) or (chieu tinh)) - hanh tang cua trung ((cong dan) OR (huong dan)) phan tap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (chieu tinh)) - hanh tang cua trung ((cong dan) OR (huong dan)) phan tap*.