Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cau phuc » cau truc, chau phu, huu phuc
hieu van » hieu va, thien van, lieu va
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
va hanh » van hanh, va thanh, va danh
phuc va » phuc vu, thuc va, chuc va
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao

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 xa) or (nang ma)) hoi. hieu van cau phuc va hanh ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang xa) OR (nang ma)) hoi. hieu van cau phuc va hanh ((vai cua) OR (lai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang xa) or (nang ma)) hoi. hieu van cau phuc va hanh ((vai cua) or (lai cua)) tre*.