Perhaps you should try some spelling variations:
cuon sach » duong sach, cuoc cach, co sach
cau phuc » cau truc, chau phu, huu phuc
hanh dai » hanh tai, hanh dao, vanh dai
cua tre » cuu tre, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
phuc va » phuc vu, thuc va, chuc va
hieu ve » hieu va, hieu van
tai hoa » tai khoa, thai hoa, thi hoa
yu hang » yu zhang, yu pang, yu wang
ve cau » ke cau, va cau, ve cac
y hang » ly hang, ty hang, _ hang
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: cuon sach ((y hang) or (yu hang)) tai hoa. hieu ve cau phuc va hanh dai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cuon sach ((y hang) OR (yu hang)) tai hoa. hieu ve cau phuc va hanh dai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "cuon sach ((y hang) or (yu hang)) tai hoa. hieu ve cau phuc va hanh dai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: cuon sach ((y hang) or (yu hang)) tai hoa. hieu ve cau phuc va hanh dai ((cua tre) OR (cua te))*.