Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
sach moi » sach doi, sach hoi, sach bai
cuu cong » cua cong, thu cong, cac cong
cong moi » cong goi, cong mi, cong mot
khai van » thai van, hai van, khao van
moi dan » moi dang, hoi dan, doi dan
dan hoa » danh hoa, dan hoat, dan khoa
va khai » van khai, va khao, va kha

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach moi) OR (bach mai)) tap, nghien cuu cong moi dan hoa hoc va khai van thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach moi) OR (bach mai)) tap, nghien cuu cong moi dan hoa hoc va khai van thanh van".
• Adding a wildcard symbol may retrieve word variants: vu ((sach moi) OR (bach mai)) tap, nghien cuu cong moi dan hoa hoc va khai van thanh van*.