Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh khoa » nganh hoa, doanh khoa, anh khoa
mach hoc » cach hoc, dich hoc, anh hoc
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va luan » vay luan, van luan, va quan
tim » time

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

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