Perhaps you should try some spelling variations:
chuong cong » cuong cong, chong cong, chuong dong
thanh tran » thanh trang, thanh toan, thanh tra
van chuong » van phong, van duong, van hung
tran van » luan van
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan
do dien » doi dien, co dien, duoc dien
o dien » co dien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((do dien) or (o dien)) sach - thanh tran van chuong cong ((tan toan) OR (tap toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((do dien) OR (o dien)) sach - thanh tran van chuong cong ((tan toan) OR (tap toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((do dien) or (o dien)) sach - thanh tran van chuong cong ((tan toan) OR (tap toan)) cao".
• Adding a wildcard symbol may retrieve word variants: ((do dien) or (o dien)) sach - thanh tran van chuong cong ((tan toan) OR (tap toan)) cao*.