Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cham luc » cham soc, nhan luc, cham cuu
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
sua va » suat va, vua va, xua va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang xa hoi. hieu ve cham luc ((va hanh) or (van thanh)) sua va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ve cham luc ((va hanh) OR (van thanh)) sua va thiet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ve cham luc ((va hanh) or (van thanh)) sua va thiet*.