Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cham duc » pham duc, cham soc, pham duy
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
y nang » ky nang, ly nang, v nang
di su » doi su, ki su, da su

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y nang xa hoi. hieu ve cham duc va danh di su triet~.
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang xa hoi. hieu ve cham duc va danh di su triet*.