Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
thien va » thien van, thien tai, trien van
tien va » dien va, thien van
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
cam ky » cao ky, cac ky
va dan » ca dan, va dao, va dau
di cua » dai cua, doi cua, de cua
tu cam » tu cham, tu cac, tu nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cam ky nang xa hoi. ((thien va) OR (tien va)) cham luc ((va hanh) or (va dan)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cam ky nang xa hoi. ((thien va) OR (tien va)) cham luc ((va hanh) OR (va dan)) di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cam ky nang xa hoi. ((thien va) OR (tien va)) cham luc ((va hanh) or (va dan)) di cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cam ky nang xa hoi. ((thien va) OR (tien va)) cham luc ((va hanh) or (va dan)) di cua tre*.