Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nghien cac » nghiep cach, nghiep cay, nghiep bac
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
mach hoc » cach hoc, dich hoc, anh hoc
cong hoc » dong hoc, cong hoa, cong coc
va luan » vay luan, van luan, va quan
ma hoi » mai hoi, xa hoi, ma hoa
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) OR (nghien cuu)) cong hoc nganh khong hoc ma hoi va luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tim mach hoc tap, ((nghien cac) OR (nghien cuu)) cong hoc nganh khong hoc ma hoi va luan van".
• Adding a wildcard symbol may retrieve word variants: tim mach hoc tap, ((nghien cac) OR (nghien cuu)) cong hoc nganh khong hoc ma hoi va luan van*.