Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
thanh va » thanh van, hanh va, thanh ha
thanh ve » hanh ve, thanh vien, thanh van
cam loc » cam lo
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
va cam » va cham, va cac, va cao
loc va » hoc va, luc va
te san » te ban, ke san, tu san

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 dang)) xa hoi. hieu va cam loc va ((thanh ve) OR (thanh va)) cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ((ky tang) or (ky dang)) xa hoi. hieu va cam loc va ((thanh ve) OR (thanh va)) cau tren~".
• Adding a wildcard symbol may retrieve word variants: te san ((ky tang) or (ky dang)) xa hoi. hieu va cam loc va ((thanh ve) OR (thanh va)) cau tren*.