Perhaps you should try some spelling variations:
thuy tinh » thuy linh, thuy anh, thuyet trinh
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
dac khoa » da khoa, dai khoa, dau khoa
khoa hoc » hoa hoc
hoc dac » hoc dan, hoc dai, hoc cac
va pham » van pham, 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: ((thue tinh) or (thuy tinh)) hoc tap, nghien cuu dong hoc dac khoa hoc ma hoi va pham van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thue tinh) OR (thuy tinh)) hoc tap, nghien cuu dong hoc dac khoa hoc ma hoi va pham van.
• Adding a wildcard symbol may retrieve word variants: ((thue tinh) or (thuy tinh)) hoc tap, nghien cuu dong hoc dac khoa hoc ma hoi va pham van*.