Perhaps you should try some spelling variations:
nganh khang » nganh khong, ngan hang, nhanh thang
khang thuoc » khong thuoc, dang thuoc, hanh thuoc
cach hoc » cach thuc, cach thoi, dich hoc
cong hoc » dong hoc, cong coc, cong ho
cong hoa » dong hoa, dong hoc, hang hoa
thuoc xa » thuoc ma, thuoc va, thuoc la
phan dau » phan tu, hang dau
su cach » su sach, tu cach, su cac
va phan » van phan, va phat, va phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach hoc tap, nghien cuu ((cong hoc) or (cong hoa)) nganh khang thuoc xa hoi va phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach hoc tap, nghien cuu ((cong hoc) OR (cong hoa)) nganh khang thuoc xa hoi va phan dau.
• Adding a wildcard symbol may retrieve word variants: su cach hoc tap, nghien cuu ((cong hoc) or (cong hoa)) nganh khang thuoc xa hoi va phan dau*.