Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
thong cong » trong cong, tong cong, thong thong
manh toan » thanh toan, anh tuan, tinh toan
thanh va » thanh van, hanh va, thanh ha
va thong » va thuong, va phuong, he thong
san toan » van toan, dan toan, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((nhieu tang) or (chieu sach)) - cong thanh va thong cong ((san toan) OR (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((nhieu tang) OR (chieu sach)) - cong thanh va thong cong ((san toan) OR (manh toan)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((nhieu tang) or (chieu sach)) - cong thanh va thong cong ((san toan) OR (manh toan)) cao*".