Perhaps you should try some spelling variations:
khang thuoc » khong thuoc, dang thuoc, khau thuoc
hanh thuoc » thanh phuoc, hanh phuc, dang thuoc
hoc nganh » hoc nhanh
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
cac nhan » ca nhan, cac nha, cam nhan
nhan dan » phan dau, gian dan, nhan tai
kon anh » dong anh, hong anh, kon mach
anh hoc » sinh hoc, benh hoc, hinh hoc
hoi cac » hoc cac, voi cac, hoa cac
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: kon anh hoc tap, nghien cuu dong hoc nganh ((khang thuoc) OR (hanh thuoc)) va hoi cac nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "kon anh hoc tap, nghien cuu dong hoc nganh ((khang thuoc) OR (hanh thuoc)) va hoi cac nhan dan".
• Adding a wildcard symbol may retrieve word variants: kon anh hoc tap, nghien cuu dong hoc nganh ((khang thuoc) OR (hanh thuoc)) va hoi cac nhan dan*.