Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
tac thanh » cac thanh, tcc thanh, tuc thanh
bac thanh » ban thanh, cac thanh, tai thanh
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (nhieu tang)) - hanh tang cua dung cong ((tac thanh) OR (bac thanh)) chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (nhieu tang)) - hanh tang cua dung cong ((tac thanh) OR (bac thanh)) chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu lang) or (nhieu tang)) - hanh tang cua dung cong ((tac thanh) OR (bac thanh)) chau".
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (nhieu tang)) - hanh tang cua dung cong ((tac thanh) OR (bac thanh)) chau*.