Perhaps you should try some spelling variations:
hoc doanh » hoa doanh, hoc dan, hoc nganh
hut tinh » hut binh, huu tinh, huy tinh
tinh hoc » sinh hoc, tin hoc, hinh hoc
hoc danh » hoc dan, hoc anh, hoc hanh
dan nhan » danh nhan, dan chan, van nhan
nhan tao » nhan tai, nhan dan
cuu mon » cuu mo, cuu mot, cuu cong
hoi dan » hoa dan, hoc dan, hoi dap
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: hut tinh hoc tap, nghien cuu mon ((hoc doanh) or (hoc danh)) hoa hoc ma hoi dan nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hut tinh hoc tap, nghien cuu mon ((hoc doanh) OR (hoc danh)) hoa hoc ma hoi dan nhan tao.
• Adding a wildcard symbol may retrieve word variants: hut tinh hoc tap, nghien cuu mon ((hoc doanh) or (hoc danh)) hoa hoc ma hoi dan nhan tao*.