Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi hang » thi hanh, thi nang, thi hong
cham tuc » nham thuc, pham thuc, tham thuc
so sach » so sanh, bo sach, co sach
cua hoi » cua moi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va danh » va dinh, va dan, va hanh
lai cua » hai cua, lai chau, thai cua
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thi hang ((cau hoi) or (cua hoi)). hieu ve cham tuc va danh ((dai cua) or (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thi hang ((cau hoi) OR (cua hoi)). hieu ve cham tuc va danh ((dai cua) OR (lai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: so sach thi hang ((cau hoi) or (cua hoi)). hieu ve cham tuc va danh ((dai cua) or (lai cua)) triet*.