Perhaps you should try some spelling variations:
va trien » va truyen, va thiet, va tuyen
cham luc » cham soc, nhan luc, cham cuu
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
te san » te ban, ke san, tu san
luc va » duc va, tuc va, loc va
te sac » te sach, te cac
de va » de van, te va, ke va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (te san)) ((ky lang) OR (ky dang)) xa hoi. hieu ve cham luc va hanh de va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te san)) ((ky lang) OR (ky dang)) xa hoi. hieu ve cham luc va hanh de va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te san)) ((ky lang) OR (ky dang)) xa hoi. hieu ve cham luc va hanh de va trien".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te san)) ((ky lang) OR (ky dang)) xa hoi. hieu ve cham luc va hanh de va trien*.