Perhaps you should try some spelling variations:
thue tinh » thuy tinh
thu tich » chu tich, chu thich, thuy tinh
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
dan khoa » dang khoa, da khoa, san khoa
khoa hoc » hoa hoc
phan van » pham van, thanh van, luan van
va phan » van phan, va phat, va phap
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: ((thu tich) or (thue tinh)) hoc tap, nghien cuu dong hoc dan khoa hoc ma hoi va phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu tich) OR (thue tinh)) hoc tap, nghien cuu dong hoc dan khoa hoc ma hoi va phan van.
• Adding a wildcard symbol may retrieve word variants: ((thu tich) or (thue tinh)) hoc tap, nghien cuu dong hoc dan khoa hoc ma hoi va phan van*.