Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cau luc » cau truc, cau phuc
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
via cua » gia cua, gian cua, giau cua
va cau » van cau, va cac, va dau
va cua » va chua, ca cua, ma cua

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

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