Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
hung cong » nhung cong, hung cuong, phung cong
ban tran » ban trang, tan tran, ban than
tran van » luan van
van hung » van dung, manh hung, van duong
cong san » cong tac
phan cau » phan dau, phan cac, phan lap

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 (hieu lang)) - ban tran van hung cong san ((phan cau) OR (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - ban tran van hung cong san ((phan cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (hieu lang)) - ban tran van hung cong san ((phan cau) OR (phan tu))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu lang)) - ban tran van hung cong san ((phan cau) OR (phan tu))*.