Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van tuan » van quan, van ban, anh tuan
hanh lai » hanh lam, hanh tai, thanh lap
van nang » van quang, van ban, van dong
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
te sach » toc sach
va tham » van tham, va cham, va thanh
soc va » hoc va, loc va, doc va
v nang » va nang, vu nang, voi nang

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 ((v nang) OR (van nang)) cau hoi. thien ((va tham) or (van tuan)) soc va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (van nang)) cau hoi. thien ((va tham) OR (van tuan)) soc va hanh lai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((v nang) OR (van nang)) cau hoi. thien ((va tham) or (van tuan)) soc va hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) OR (van nang)) cau hoi. thien ((va tham) or (van tuan)) soc va hanh lai cua triet*.