Perhaps you should try some spelling variations:
thep hanh » thep hinh, them thanh, thuc hanh
hanh may » hanh ma, hanh mau, hanh ngay
tinh f.c » tinh bac, tinh duc, tinh pc
thi sinh » thai sinh, thi minh, thi hinh
sinh lam » dinh lam, sinh ly, sinh vat
lam tinh » ha tinh, ban tinh, dac tinh
xanh lam » hanh lam, dinh lam, xanh a
tinh hoc » sinh hoc, tin hoc, hinh hoc

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((( thep hanh may tinh f.c. ) OR ( thi sinh lam tinh f.c. ))) OR ( heo xanh lam tinh hoc. ))~.
• Adding a wildcard symbol may retrieve word variants: (((( thep hanh may tinh f.c. ) or ( thi sinh lam tinh f.c. ))) or ( heo xanh lam tinh hoc. ))*.