Perhaps you should try some spelling variations:
nhu phuong » thu phuong, nhung phuong, thi phuong
chieu sach » chinh sach, chiet tach, chieu sang
ho chieu » theo chieu, hoc thieu, doi chieu
canh van » anh van, can van, cach van
van luan » van quan, van tuan, von luan
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh van luan ((bang phuong) OR (nhu phuong)) van toan cao~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh van luan ((bang phuong) or (nhu phuong)) van toan cao*.