Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty dang » ty xang, ky dang, ty hang
xay hoi » xa hoi, tay hoi, cay phoi
nam luc » nang luc, nhan luc, nam thuc
luc van » luoc van, luu van, duc van
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, dua tren

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 ty dang xay hoi. hieu van nam luc van hanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty dang xay hoi. hieu van nam luc van hanh va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te sach ty dang xay hoi. hieu van nam luc van hanh va ((cua tre) or (cua triet))*.