Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
tinh ven » trinh ven, tinh yen, sinh vien
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
tinh ve » trinh ve, dinh ve, tinh va
te ban » te bao
luc va » duc va, tuc va, loc va
ban ky » van ky, dan ky
va cao » va cac, va dao, va bao
va co » vo co

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 ban ky tang xa hoi. hieu ((va cao) OR (va co)) luc va ((tinh ve) OR (tinh ven)) cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ban ky tang xa hoi. hieu ((va cao) OR (va co)) luc va ((tinh ve) or (tinh ven)) cau tren~".
• Adding a wildcard symbol may retrieve word variants: te ban ky tang xa hoi. hieu ((va cao) OR (va co)) luc va ((tinh ve) or (tinh ven)) cau tren*.