Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, chat lua
cham cuu » cap cuu, chat cua
van doan » van doanh, van toan, van hoan
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
van cua » vang cua, ban cua, nan cua
dan cua » dan ca, ban cua, dai cua
y nang » ky nang, ly nang, v 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 y nang xa hoi. hieu ve ((cham luc) or (cham cuu)) van doan ((van cua) OR (dan cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ve ((cham luc) OR (cham cuu)) van doan ((van cua) OR (dan cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ve ((cham luc) or (cham cuu)) van doan ((van cua) OR (dan cua)) tre*".