Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
van cham » van chat, van tham, va cham
cham luc » cham soc, nhan luc, cham cuu
va doanh » vay doanh, va danh, hoa doanh
hieu van » hieu va, thien van, lieu va
van cua » vang cua, ban cua, dan cua
tu sach » thu sach, su sach, te sach
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang

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 ((ly nang) or (v nang)) xa hoi. hieu van cham luc ((va doanh) OR (van doanh)) van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ly nang) OR (v nang)) xa hoi. hieu van cham luc ((va doanh) OR (van doanh)) van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ly nang) or (v nang)) xa hoi. hieu van cham luc ((va doanh) OR (van doanh)) van cua tre*".