Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chiet tach » chieu sach
thanh dung » thanh duong, thanh tung, thanh hung
nhung cong » dung cong, thong cong, hang cong
ho chiet » ho chieu, ho thiet, hoc thiet
dung cua » dung luan, dung cho
dan toan » van toan, dan than, manh toan
toan cau » 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: ho chiet tach - thanh dung cua ((nhung cong) or (nhung phuong)) dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh dung cua ((nhung cong) OR (nhung phuong)) dan toan cau*.