Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, hieu van
hanh hang » thanh hang, hang hang, hanh han
dung cong » dung trong
hang cua » mang cua, hang ca, huong cua
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((((hieu lang) or (nhieu tang))) or (chieu sach)) - hanh hang cua dung cong tan tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((hieu lang) OR (nhieu tang))) OR (chieu sach)) - hanh hang cua dung cong tan tran van.
• Adding a wildcard symbol may retrieve word variants: theo ((((hieu lang) or (nhieu tang))) or (chieu sach)) - hanh hang cua dung cong tan tran van*.