Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cao suc » cao su, cao duc
ve cao » va cao, ve bao, ve cac
suc va » duc va, tuc va, luc va
va anh » van anh, va danh, va hanh
anh ve » hanh ve, anh va, anh viet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang ((xa hoi) or (ma hoa)). hieu ve cao suc va anh ve ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang ((xa hoi) OR (ma hoa)). hieu ve cao suc va anh ve ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang ((xa hoi) or (ma hoa)). hieu ve cao suc va anh ve ((cua triet) OR (su triet))*".