Perhaps you should try some spelling variations:
trinh chat » tinh chat, trinh luat, trinh han
giao dang » giao dan, cao dang, gian dan
phien nam » hien nay, phien ban, vien nam
chat luan » chat lua, chat luong, chat quang
hoc phien » thuoc phien, hoc nghien, hoc phan
hien nam » hien nay, vien nam, mien nam
cau cong » cac cong, cuu cong, cao cong
cong hoc » dong hoc, cong hoa, cong coc
dang va » dang van, dang vat, hang va
luan va » luan van, luat va
cac tay » cac cay, cac tac, cac tai
ca cau » cac cau, can cau, cua cau
cay co » cac co, cay cong
ca cay » cua cay, cac cay, ca cac
tay co » tay o
cac ty » cac ky, cac tu
va ca » va cao, va cai, va cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( cong trinh giao dang va ca cay co hoc hien nam ) or ( cong trinh giao dang va ca cau cong hoc phien nam ))) or ((( cong trinh chat luan va cac tay co hoc viet nam ) OR ( cong trinh chat luan va cac ty co hoc viet nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( cong trinh giao dang va ca cay co hoc hien nam ) OR ( cong trinh giao dang va ca cau cong hoc phien nam ))) OR ((( cong trinh chat luan va cac tay co hoc viet nam ) OR ( cong trinh chat luan va cac ty co hoc viet nam ))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( cong trinh giao dang va ca cay co hoc hien nam ) or ( cong trinh giao dang va ca cau cong hoc phien nam ))) or ((( cong trinh chat luan va cac tay co hoc viet nam ) OR ( cong trinh chat luan va cac ty co hoc viet nam ))))*".