Perhaps you should try some spelling variations:
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu va » hieu qua
va dang » van dang, va nang, va lang
dang co » dong co, dung co, dang do
tu sai » tu bai, tu san, tu cai
co cua » con cua, ca cua, cong cua
cua su » qua su
nuoc » quoc, duoc, ngoc

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 ((ky lang) OR (ky dang)) xa hoi. ((hieu va) or (lieu va)) dat nuoc va dang co cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ((ky lang) OR (ky dang)) xa hoi. ((hieu va) OR (lieu va)) dat nuoc va dang co cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ((ky lang) OR (ky dang)) xa hoi. ((hieu va) or (lieu va)) dat nuoc va dang co cua su".
• Adding a wildcard symbol may retrieve word variants: tu sai ((ky lang) OR (ky dang)) xa hoi. ((hieu va) or (lieu va)) dat nuoc va dang co cua su*.