Perhaps you should try some spelling variations:
chieu cao » hieu cac, hieu ca, chieu day
hieu cao » hieu cac, hieu ca, kieu cao
cau tren » cu tren, dau tren, ca tren
chat hoc » chat hoa, chat thom, cho hoc
cau theo » cau thi, cau tao
tang xa » trang xa, tang ma, lang xa
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
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) OR (chieu cao)) chat hoc va danh 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) OR (chieu cao)) chat hoc va danh vi ((cau tren) or (cau theo))~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang xa hoi. ((hieu cao) OR (chieu cao)) chat hoc va danh vi ((cau tren) or (cau theo))*.