Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
song xa » song cua
ky song » k song, ky cong, ky trong
hieu ve » hieu va, hieu van

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)) ky song xa hoi. ((hieu ve) or (hieu qua)) cam xuc van hanh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky song xa hoi. ((hieu ve) OR (hieu qua)) cam xuc van hanh thai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ky song xa hoi. ((hieu ve) or (hieu qua)) cam xuc van hanh thai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ky song xa hoi. ((hieu ve) or (hieu qua)) cam xuc van hanh thai cua triet*.