Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
thue tinh » thuy tinh
hoc khanh » hoc nhanh, hoc thanh, hoc hanh
khanh hoa » thanh hoa, hang hoa
tinh hoc » sinh hoc, tin hoc, hinh hoc
cong hoc » dong hoc, cong hoa, cong coc
hai tran » thai tran, ha tran, hai trac
tuan san » luan san, tan san, thanh san
hai tan » hai van, hai quan
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: thue tinh hoc tap, nghien thu cong hoc khanh hoa hoc xa ((hai tran) or (hai tan)) tuan san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thue tinh hoc tap, nghien thu cong hoc khanh hoa hoc xa ((hai tran) OR (hai tan)) tuan san.
• Adding a wildcard symbol may retrieve word variants: thue tinh hoc tap, nghien thu cong hoc khanh hoa hoc xa ((hai tran) or (hai tan)) tuan san*.