Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
ly nang » ky nang, ly hang, ly vang
sach ly » sach y, sach lo, sach ty
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
va danh » va dinh, va dan, va hanh
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
di cua » doi cua, de cua, do cua

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 cau xuc va danh ((di cua) OR (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ly nang ((ma hoi) OR (xa hoi)). hieu van cau xuc va danh ((di cua) OR (dai cua)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ly nang ((ma hoi) or (xa hoi)). hieu van cau xuc va danh ((di cua) OR (dai cua)) te*".