Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoa nganh » hoc nganh, khoi nganh, hoa doanh
khong hoc » khung hoc, thong hoc, khong chuc
mach hoc » cach hoc, dich hoc, anh hoc
cong hoa » dong hoa, dong hoc, hang hoa
nhan van » nhan dan, nhan va, phan van
tu mach » tu cach, tu manh, tu hach
va nhan » van nhan, ca nhan, va phan

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 cua cong hoa nganh ((khong hoc) OR (khong thuoc)) xa hoi va nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cua cong hoa nganh ((khong hoc) OR (khong thuoc)) xa hoi va nhan van".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cua cong hoa nganh ((khong hoc) OR (khong thuoc)) xa hoi va nhan van*.