Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
tu sai » tu bai, tu san, tu lai
tu cai » tu cac, tu can, tu bai
va dan » ca dan, va dao, va dau
dan co » dan cho, dang co, danh co
co cua » con cua, ca cua, cong cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sai) OR (tu cai)) ky nang xa hoi. hieu va cac nuoc va dan co cua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sai) OR (tu cai)) ky nang xa hoi. hieu va cac nuoc va dan co cua su".
• Adding a wildcard symbol may retrieve word variants: ((tu sai) OR (tu cai)) ky nang xa hoi. hieu va cac nuoc va dan co cua su*.