Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu sach » chinh sach, chiet tach, chieu sang
hanh tram » hanh tam, hanh trang, thanh tran
tong cong » trong cong, cong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
tram van » tran van, tam van, trang van
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh tram van ((tong cong) or (nhung phuong)) ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tram van ((tong cong) OR (nhung phuong)) ((dan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tram van ((tong cong) or (nhung phuong)) ((dan toan) or (dan than)) cau*.