Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
soc van » hoc van, oc van, soc dan
sac van » cac van, san van, sat van
dao cua » day cua, dan cua, do cua
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

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