Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
thu bang » thu ban, thu hang, chu bang
hanh lai » hanh lam, hanh tai, thanh lap
bang xa » lang xa, bang va, mang xa
hieu va » lieu va
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) thu bang xa hoi. ((hieu va) or (hieu qua)) giao duc va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) thu bang xa hoi. ((hieu va) OR (hieu qua)) giao duc va hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) thu bang xa hoi. ((hieu va) or (hieu qua)) giao duc va hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) thu bang xa hoi. ((hieu va) or (hieu qua)) giao duc va hanh lai cua triet*.