Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
toan cao » toan tap
toan ban » van ban

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 lang) or (chinh sach)) - hanh tang cua dung cong manh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chinh sach)) - hanh tang cua dung cong manh ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chinh sach)) - hanh tang cua dung cong manh ((toan cao) or (toan ban))*.