Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat soc » chat hoc, chat doc, chat song
danh dau » lanh dao, hang dau, danh tu
thi van » thi lan, thi hanh, thi nang
te sach » toc sach
va danh » va dinh, va dan, va hanh
dau cua » dai cua, day cua, cau cua
tu sach » thu sach, su sach, tu cach
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: ((tu sach) OR (te sach)) ky nang x hoi. thi van ((chat soc) or (cham soc)) va danh dau cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang x hoi. thi van ((chat soc) OR (cham soc)) va danh dau cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ky nang x hoi. thi van ((chat soc) or (cham soc)) va danh dau cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ky nang x hoi. thi van ((chat soc) or (cham soc)) va danh dau cua triet*.