Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
gianh lan » gian lan, gianh lai, gian dan
hanh noi » ha noi, nang noi
cong coc » cong cuoc, cong cac, cong co
coc toan » ngoc toan, coc khoan, quoc toan
toan hoa » toan khoa, toan hoat, toan hoc
va gianh » va gian, van giang, va giai
hoc xa » hoc ma

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 noi) OR (hanh vi)) tap, nghien cua cong coc toan hoa hoc xa hoi va gianh lan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((hanh noi) OR (hanh vi)) tap, nghien cua cong coc toan hoa hoc xa hoi va gianh lan".
• Adding a wildcard symbol may retrieve word variants: tu ((hanh noi) OR (hanh vi)) tap, nghien cua cong coc toan hoa hoc xa hoi va gianh lan*.