Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
thanh phan » thanh pho, thanh san, thanh toan
hoa nganh » hoc nganh, khoi nganh, hoa doanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
dan thanh » dang thanh, danh thanh, ban thanh
sach moi » sach hoi, bach mai, sach bai
sach doi » sach hoi, sach dao, sach bai
cac dong » cac duong, cac cong, cac dang
dong hoa » dong hoc, dong co
hoi dan » hoa dan, hoc dan, hoi dap
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 ((sach moi) OR (sach doi)) tap, nghien cac dong hoa nganh hoa hoc xa hoi dan thanh phan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach moi) OR (sach doi)) tap, nghien cac dong hoa nganh hoa hoc xa hoi dan thanh phan".
• Adding a wildcard symbol may retrieve word variants: tu ((sach moi) OR (sach doi)) tap, nghien cac dong hoa nganh hoa hoc xa hoi dan thanh phan*.