Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
thanh phan » thanh pho, thanh san, thanh hai
thanh toan » thanh hoa, thanh san, tinh toan
phan khoa » pham khoa, nhan khoa, phan hoa
chu dich » chu tich, chu dinh, chu thich
dich hoc » sinh hoc, hinh hoc, tinh hoc
hoc phan » hoc dan, hoc pho
khoa hoc » hoa hoc
huu van » cuu van, huu han, luu van
van hoc » van hoa
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: chu dich hoc tap, nghien huu van hoc phan khoa hoc ma hoi va ((thanh phan) OR (thanh toan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chu dich hoc tap, nghien huu van hoc phan khoa hoc ma hoi va ((thanh phan) OR (thanh toan))".
• Adding a wildcard symbol may retrieve word variants: chu dich hoc tap, nghien huu van hoc phan khoa hoc ma hoi va ((thanh phan) OR (thanh toan))*.