Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
kha nang » phap nang, ky nang, ki nang
hanh doi » thanh doi, hanh noi, hang doi
te sach » toc sach
van hau » van ha, van dau, van hac
van hai » van ha, van chat, van hanh
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua
x hoi » xa hoi, o hoi, x ho

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 ((kha nang) or (cam nang)) x hoi. thien ((van hau) OR (van hai)) duc va hanh doi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((kha nang) OR (cam nang)) x hoi. thien ((van hau) OR (van hai)) duc va hanh doi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((kha nang) or (cam nang)) x hoi. thien ((van hau) OR (van hai)) duc va hanh doi cua triet*".