Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
va hanh » van hanh, va thanh, va danh
hai hau » hai chau, dai hau, hai hai
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
ve cau » ke cau, va cau, ve cac
luc va » duc va, tuc va, loc va
a chau » ha chau, lai chau, hat chau

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 y nang ma hoi. hieu ve cau luc va hanh ((hai hau) or (a chau)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ma hoi. hieu ve cau luc va hanh ((hai hau) OR (a chau)) treo*.