Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hanh hoc » thanh hoc, hinh hoc, anh hoc
cong coc » cong cuoc, cong cac, cong co
coc toan » ngoc toan, coc khoan, quoc toan
khoa hoc » hoa hoc
nhan van » nhan dan, nhan va, phan van
tu hanh » du hanh, lu hanh, thuc hanh
hoc dai » hoc dan
moi van » mai van, doi van, moi ban
moi va » hoi va, mai va, moi ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu hanh hoc tap, nghien thu cong coc toan khoa hoc dai ((moi van) OR (moi va)) nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu hanh hoc tap, nghien thu cong coc toan khoa hoc dai ((moi van) OR (moi va)) nhan van".
• Adding a wildcard symbol may retrieve word variants: tu hanh hoc tap, nghien thu cong coc toan khoa hoc dai ((moi van) OR (moi va)) nhan van*.