Perhaps you should try some spelling variations:
cau theo » cau thi, cau tao
cau tren » cu tren, dau tren, ca tren
hieu cao » chieu cao, hieu cac, hieu ca
chat hoa » thuat hoa, chat va, chat huu
danh vi » hanh vi, danh di, danh va
dinh vi » dinh ve, dinh viet, dinh tri
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
hoa va » hoa van, hoa xa, hoa vo
tu sac » tu sach, tu cac, 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: tu sac ky tang xa hoi. hieu cao chat hoa va ((danh vi) OR (dinh vi)) ((cau tren) OR (cau theo))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky tang xa hoi. hieu cao chat hoa va ((danh vi) OR (dinh vi)) ((cau tren) or (cau theo))~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang xa hoi. hieu cao chat hoa va ((danh vi) OR (dinh vi)) ((cau tren) or (cau theo))*.