Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, thanh trung, manh hung
tang cuong » nang luong
trung hoc » trung quoc
tang cong » trang cong, dang cong, tong cong
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
san van » tan van, luan van, dang van

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 - manh trung hoc ((tang cong) OR (tang cuong)) ((san van) or (tran van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - manh trung hoc ((tang cong) OR (tang cuong)) ((san van) OR (tran van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - manh trung hoc ((tang cong) OR (tang cuong)) ((san van) or (tran van)) ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - manh trung hoc ((tang cong) OR (tang cuong)) ((san van) or (tran van)) ban*.