Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
cu tren » tu tren, dua tren
va tinh » may tinh
cao luc » bao luc, cao duc, cao suc
hieu va » lieu va, hieu qua
ky tang » ky dang, kho tang, ky trong
va cao » va cac, va co, va dao
te san » te ban, ke san, tu san
vi cu » vi su, vi xu, vi du

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te san ((ky tang) OR (ky nang)) xa hoi. hieu va cao luc ((va thanh) OR (va tinh)) vi cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ((ky tang) or (ky nang)) xa hoi. hieu va cao luc ((va thanh) OR (va tinh)) vi cu tren~".
• Adding a wildcard symbol may retrieve word variants: te san ((ky tang) or (ky nang)) xa hoi. hieu va cao luc ((va thanh) OR (va tinh)) vi cu tren*.