Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van chat » cao chat
chat luc » chat xuc, chat lua, nhan luc
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach
thi van » thi lan, thi hanh, thi nang
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
luc va » duc va, tuc va, loc va
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: ((su sach) or (tu sach)) ky nang x hoi. thi van chat luc va hanh vi ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (tu sach)) ky nang x hoi. thi van chat luc va hanh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (tu sach)) ky nang x hoi. thi van chat luc va hanh vi ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (tu sach)) ky nang x hoi. thi van chat luc va hanh vi ((cua tre) OR (cua triet))*.