Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
cau tren » cu tren, dau tren, ca tren
thanh va » thanh van, hanh va, thanh ha
thu san » thuy san, thu ban, phu san
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
dao duc » giao duc, tao duoc
tu san » tu ban, tu can, vu san
ma hoi » mai hoi, xa hoi, ma hoa
va dao » ca dao

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: ((tu san) OR (thu san)) ky nang ma hoi. hieu va dao duc va ((thanh va) OR (thanh doi)) cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) OR (thu san)) ky nang ma hoi. hieu va dao duc va ((thanh va) or (thanh doi)) cau tren~".
• Adding a wildcard symbol may retrieve word variants: ((tu san) OR (thu san)) ky nang ma hoi. hieu va dao duc va ((thanh va) or (thanh doi)) cau tren*.