Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu sach » chinh sach, chiet tach, chieu sang
hanh luong » hang luong, thanh huong, thanh cuong
luong tham » luong thanh, luong tai, luong thi
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan tap
toan ban » van ban

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 luong tham ((nhung cong) or (nhung phuong)) dan ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh luong tham ((nhung cong) OR (nhung phuong)) dan ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh luong tham ((nhung cong) or (nhung phuong)) dan ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh luong tham ((nhung cong) or (nhung phuong)) dan ((toan cao) OR (toan ban))*.