Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhieu tang » chieu sang, nhiet nang
chieu sach » chinh sach, chiet tach, chieu sang
trung luan » truong luan, trung tuan, trung quan
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hieu lang » chieu sang, hieu quang, hieu van
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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))) or (chieu sach)) - thanh trung luan chung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((((hieu lang) OR (nhieu tang))) OR (chieu sach)) - thanh trung luan chung cong tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((((hieu lang) OR (nhieu tang))) or (chieu sach)) - thanh trung luan chung cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: doi ((((hieu lang) OR (nhieu tang))) or (chieu sach)) - thanh trung luan chung cong tac toan tap*.