Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
toc sach » hoc sach, doc sach, thuoc sach
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
ty dang » ty xang, ty hang, ty dong
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, dua tren
van cam » van nam, van lam, van cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((ty dang) or (ky dang)) xay hoi. hieu van cam luc van hanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty dang) OR (ky dang)) xay hoi. hieu van cam luc van hanh va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty dang) or (ky dang)) xay hoi. hieu van cam luc van hanh va ((cua tre) or (cua triet))*.