Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
cham hoc » cham soc, cham hoi, cho hoc
chat hoc » chat hoa, chat thom, cho hoc
van hanh » van thanh, ban hanh, van anh
xang xa » lang xa, mang xa, ang xa
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, dua tren
y xang » ty xang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y xang xa hoi. hieu vu ((cham hoc) or (chat hoc)) van hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y xang xa hoi. hieu vu ((cham hoc) OR (chat hoc)) van hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach y xang xa hoi. hieu vu ((cham hoc) or (chat hoc)) van hanh vi ((cua tre) or (cua triet))*.