Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
luc van » luoc van, luu van, duc van
lai cua » dai cua, hai cua, lai chau
vi cua » vai cua, di cua

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) or (vu bach)) ky nang xa hoi. hieu ve cham luc van hanh ((vi cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu bach)) ky nang xa hoi. hieu ve cham luc van hanh ((vi cua) OR (lai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu bach)) ky nang xa hoi. hieu ve cham luc van hanh ((vi cua) or (lai cua)) tre*.