Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
toc sach » hoc sach, doc sach, thuoc sach
van cham » van chat, van tham, van pham
va cham » va chat, va tham
cao hoc » co hoc, cho hoc, chat hoc
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
sach 2 » sach y
xuc va » duc va, tuc va, luc va
2 nang » v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach 2 nang ((cau hoi) or (cao hoc)). hieu ((van cham) or (va cham)) xuc va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach 2 nang ((cau hoi) OR (cao hoc)). hieu ((van cham) OR (va cham)) xuc va hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach 2 nang ((cau hoi) or (cao hoc)). hieu ((van cham) or (va cham)) xuc va hanh lai cua triet*.