Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
van cam » van nam, van lam, van cau
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ly nang ((ma hoi) or (xa hoi)). hieu van cam xuc va danh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ly nang ((ma hoi) OR (xa hoi)). hieu van cam xuc va danh di cua tu*.