Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
luc phan » duc phan, luc nhan, luan phan
cac tren » ca tren, cau tren, rac tren
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cong va » cong ha, cong tac, luong va
dong va » dung va, dong ha, luong va

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 ty nang xa hoi. hieu ve cham luc phan ((cong va) OR (dong va)) cac tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. hieu ve cham luc phan ((cong va) OR (dong va)) cac tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ve cham luc phan ((cong va) OR (dong va)) cac tren*.