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
cuu cong » cua cong, thu cong, cac cong
cong mot » cong dot, trong mot, cong mong
van khai » van hai, van khi, dan khai
vu sach » vu bach, su sach, vu khach
moi tap » moi tai, toi tap
mot dan » mat dan, moi dan, mot lan
dan hoa » danh hoa, dan hoat, dan khoa
va khai » va khao, va kha, va khi

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