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
moi dan » moi dang, hoi dan, doi dan
dan hoa » danh hoa, dan hoat, dan khoa
hoc vat » hoc va, hoc viet, thuc vat
vat hai » van hai, dat hai, gat hai
hai van » thai van, ha van, hai tan

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

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