Perhaps you should try some spelling variations:
kinh chao » trinh chao, tinh chat, dinh chau
minh chau » tinh chat
sach tien » sach tren, sach thieu
tien chao » dien cho, tien cua, tien giao
chao khoa » chai khoa, thao khoa, cao khoa
khoa hoc » hoa hoc
so sanh » do sanh
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sanh ((kinh chao) OR (minh chau)) khoa hoc ) or ( su sach tien chao khoa hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sanh ((kinh chao) OR (minh chau)) khoa hoc ) OR ( su sach tien chao khoa hoc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( so sanh ((kinh chao) OR (minh chau)) khoa hoc ) or ( su sach tien chao khoa hoc ))".
• Adding a wildcard symbol may retrieve word variants: (( so sanh ((kinh chao) OR (minh chau)) khoa hoc ) or ( su sach tien chao khoa hoc ))*.