Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
hanh truong » hanh trong, anh truong, manh truong
truong tham » truong ham, tuong tham, truong thanh
nhung huong » nhung tuong, nhung cong, nhung dung
doi chieu » doc hieu, doi chi, mot chieu
ho chieu » theo chieu, hoc thieu, mot chieu
dan toan » van toan, dan than, manh 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: ((ho chieu) OR (doi chieu)) sach - hanh truong tham ((nhung huong) or (nhung phuong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - hanh truong tham ((nhung huong) OR (nhung phuong)) dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - hanh truong tham ((nhung huong) or (nhung phuong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - hanh truong tham ((nhung huong) or (nhung phuong)) dan toan cao*.