Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
cac chuc » cac chu, cac chung, cach thuc
co sach » bo sach, cuon sach, hoc sach
va hanh » van hanh, va thanh, va danh
chuc va » thuc va, thuc vat
hieu ve » hieu va, hieu van
tai hoa » tai khoa, thai hoa, thi hoa
yu hang » yu zhang, yu pang, yu wang
ty hang » ly hang, ty xang, thi hang
cua tre » cua te, cuu tre, cua triet
y hang » ly hang, _ hang
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ((((y hang) or (ty hang))) or (yu hang)) tai hoa. hieu ve cac chuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ((((y hang) OR (ty hang))) OR (yu hang)) tai hoa. hieu ve cac chuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: co sach ((((y hang) or (ty hang))) or (yu hang)) tai hoa. hieu ve cac chuc va hanh dai cua tre*.