Perhaps you should try some spelling variations:
thanh trang » thanh trung, hanh trang, thanh thang
nhiet nang » nhiet dong, viet nang, nhieu tang
hieu quang » thieu quang, hieu quan, hieu qua
va truong » van truong, xa truong, va thuong
va trong » va thong, va tuong, va trung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((nhiet nang) or (hieu quang)) - thanh trang ((va trong) OR (va truong)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((nhiet nang) OR (hieu quang)) - thanh trang ((va trong) OR (va truong)) cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((nhiet nang) or (hieu quang)) - thanh trang ((va trong) OR (va truong)) cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: doi ((nhiet nang) or (hieu quang)) - thanh trang ((va trong) OR (va truong)) cong tac toan cao*.