Perhaps you should try some spelling variations:
nhieu tang » chieu sang
nhiet nang » nhiet dong, viet nang, thien nang
hanh trung » thanh trung, hanh trang, manh trung
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, hieu van
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
tac thanh » bac thanh, cac thanh, tcc thanh
thanh cau » thanh chau, thanh mau, nhanh cau
cong tac » cong ty

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

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