Perhaps you should try some spelling variations:
chua trieu » cua triet, cau trieu, chua thiet
hieu van » hieu va, thien van, lieu va
chua tre » chua tri, cua tre, cho tre
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky dang, ky tang
van cam » van nam, van lam, van cau
xuc va » duc va, tuc va, luc va
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky sang ((ma hoi) or (xa hoi)). hieu van cam xuc va hanh va ((chua tre) OR (chua trieu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ((ma hoi) OR (xa hoi)). hieu van cam xuc va hanh va ((chua tre) OR (chua trieu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ((ma hoi) or (xa hoi)). hieu van cam xuc va hanh va ((chua tre) OR (chua trieu))*".