Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
ky trang » ke trang, ky trong, ky nang
va thanh » ban thanh, va tinh, le thanh
ky tang » ky nang, ky dang, kho tang
hieu va » lieu va, hieu qua
cam loc » cam lo
ve cau » ke cau, va cau, ve cac
te san » te ban, ke san, tu san
va cam » va cham, va cac, va cao

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