Perhaps you should try some spelling variations:
truong phuong » truong chung, truong trung, dung phuong
nhung phuong » dung phuong, nhu phuong, bang phuong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh mang » nhanh mang, hanh trang, nhanh lang
doan toan » doan tuan, doanh hoan, doan trang
mang cua » manh cua, dung cua, ban cua
dan toan » van toan, dan than, manh toan
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh mang cua ((nhung phuong) OR (truong phuong)) ((doan toan) or (dan toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh mang cua ((nhung phuong) OR (truong phuong)) ((doan toan) OR (dan toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh mang cua ((nhung phuong) OR (truong phuong)) ((doan toan) or (dan toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh mang cua ((nhung phuong) OR (truong phuong)) ((doan toan) or (dan toan)) cao*.