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

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) OR (hieu va)) cau xuc va danh 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) OR (hieu va)) cau xuc va danh 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) OR (hieu va)) cau xuc va danh dai cua te*".