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, bach mai
cong moi » cong goi, cong mot, cong noi
khai van » thai van, hai van, khao van
vu sach » vu bach, su sach, vu khach
moi tap » moi tai, toi tap
cong mi » cong li, cong ma, cong ti
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 tap, nghien cuu ((cong moi) OR (cong mi)) dan hoa hoc va khai van thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach moi tap, nghien cuu ((cong moi) OR (cong mi)) dan hoa hoc va khai van thanh van".
• Adding a wildcard symbol may retrieve word variants: vu sach moi tap, nghien cuu ((cong moi) OR (cong mi)) dan hoa hoc va khai van thanh van*.