Perhaps you should try some spelling variations:
cuu tre » cau tren, cau treo
va hanh » van hanh, va thanh, va danh
cao suc » cao su, cao duc
sach ty » sach y, sach thu, xach tay
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach uu
cua tre » cua te, cua triet, dua tren
ve cao » va cao, ve bao, ve cac
suc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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: su ((sach ty) OR (sach tu)) nang x hoi. hieu ve cao suc va hanh vi ((cuu tre) OR (cua tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) or (sach tu)) nang x hoi. hieu ve cao suc va hanh vi ((cuu tre) OR (cua tre))~".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach tu)) nang x hoi. hieu ve cao suc va hanh vi ((cuu tre) OR (cua tre))*.