Perhaps you should try some spelling variations:
nganh khong » nhanh chong, nganh nong, nganh khoa
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh cong » nhanh chong, thanh cong
chau nhan » chan nhan, chau phan, ca nhan
mach hoc » cach hoc, dich hoc, anh hoc
cac cong » cua cong
cong hoa » dong hoa, dong hoc, hang hoa
hai chau » lai chau, ha chau, hat chau
nhan dan » phan dau, gian dan, nhan tai
tu mach » tu cach, tu manh, tu hach
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien cac cong hoa ((nganh khong) or (nganh cong)) hoc xa hai chau nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cac cong hoa ((nganh khong) OR (nganh cong)) hoc xa hai chau nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cac cong hoa ((nganh khong) or (nganh cong)) hoc xa hai chau nhan dan*.