Perhaps you should try some spelling variations:
ngoc lanh » ngoc anh, ngoc lan, ngoc oanh
dinh hoc » sinh hoc, hinh hoc, tinh hoc
ngot anh » ngoc anh, ngo thanh, ngoc oanh
khoa hoc » hoa hoc
su dinh » vu dinh, su kinh, su hinh
cuu mon » cuu mo, cuu mot, cuu cong
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: su dinh hoc tap, nghien cuu mon ((ngot anh) OR (ngoc lanh)) khoa hoc xa hoi va nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su dinh hoc tap, nghien cuu mon ((ngot anh) OR (ngoc lanh)) khoa hoc xa hoi va nhan va".
• Adding a wildcard symbol may retrieve word variants: su dinh hoc tap, nghien cuu mon ((ngot anh) OR (ngoc lanh)) khoa hoc xa hoi va nhan va*.