Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
cong moi » cong goi, cong mi, cong mot
cac cong » cua cong
moi tap » moi tai, toi tap
so sach » so sanh, bo sach, co sach
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 ban » hai bang, hai ba, tai ban
su sach » vu sach

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) OR (so sach)) moi tap, nghien cac cong moi dan hoa hoc vat hai ban thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) moi tap, nghien cac cong moi dan hoa hoc vat hai ban thanh van".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) moi tap, nghien cac cong moi dan hoa hoc vat hai ban thanh van*.