Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, ban hanh
via cua » gia cua, gian cua, giau cua
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, dia danh
su cac » tu cac, su can, eu cac
va bao » va bai
su cao » cu cao, vu cao, su co
bao bo » bac bo, ban bo, nao bo

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

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