Perhaps you should try some spelling variations:
hach lich » tich lich, hoc lich, mach tich
sach tich » mach tich, sach kinh, suc tich
ton giao » toan giao, hoc giao, so giao
su sach » so sach, vu sach
tich so » tich bao, tinh son
tu hach » tu hanh, tu cach, tu sach
so gian » so giai, so giao, so gia

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach tich so - ton giao ) or ( tu hach lich su - so gian ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tich so - ton giao ) OR ( tu hach lich su - so gian ))*.