Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
van thanh » ban thanh, van tuan
mach hoc » cach hoc, dich hoc, anh hoc
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
van nhan » van phan, danh nhan, van khanh
bo mach » bo sach, ban mach, bo trach
hoc xua » hoc cua, hoc xa, hoc lua
xua hai » qua hai, cua hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo mach hoc tap, nghien cac cong hoc nganh khoa hoc xua hai ((van nhan) OR (van thanh)) va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo mach hoc tap, nghien cac cong hoc nganh khoa hoc xua hai ((van nhan) OR (van thanh)) va".
• Adding a wildcard symbol may retrieve word variants: bo mach hoc tap, nghien cac cong hoc nganh khoa hoc xua hai ((van nhan) OR (van thanh)) va*.