Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nganh khong » nganh cong, nhanh chong, nganh nong
nghien huu » nghien cuu, nguyen huu, nhiem huu
hoc nganh » hoc nhanh
phap phat » phap luat
mach hoc » cach hoc, dich hoc, anh hoc
huu dung » huu tung, huu quang, thuy dung
dung hoc » dong hoc, dung thuoc, trung hoc
thuoc va » thuc va, thuoc ma, thuong va
phap vat » phap luat, phap viet, phap day
su mach » su sach
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su mach hoc tap, nghien huu dung hoc nganh khong thuoc va hoi va ((phap vat) OR (phap phat))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su mach hoc tap, nghien huu dung hoc nganh khong thuoc va hoi va ((phap vat) OR (phap phat))".
• Adding a wildcard symbol may retrieve word variants: su mach hoc tap, nghien huu dung hoc nganh khong thuoc va hoi va ((phap vat) OR (phap phat))*.