Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su xac
su cac » tu cac, su cao, su can
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua

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

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