Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
cham luc » cham soc, cham cuu, chat lua
dang xay » van xay
dang van » hoang van, hang va
nhan luc » nang luc
cua tre » cua te, cuu tre, cua triet
tai cua » thai cua, tai cuc, tri cua
hieu va » lieu va, hieu qua
bao ky » cao ky, ban ky, bac ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te bao ky ((dang xay) OR (dang van)) hoi. hieu va ((cham luc) OR (nhan luc)) van doanh tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te bao ky ((dang xay) or (dang van)) hoi. hieu va ((cham luc) OR (nhan luc)) van doanh tai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te bao ky ((dang xay) or (dang van)) hoi. hieu va ((cham luc) OR (nhan luc)) van doanh tai cua tre*.