Perhaps you should try some spelling variations:
thu bang » thu ban, thu hang, chu bang
hanh dai » hanh tai, hanh dao, vanh dai
mai khoi » mai khoa, tai khoa, cac khoi
sach thu » sach thue, sach thieu, sach tham
so sach » so sanh, bo sach, co sach
va hanh » van hanh, va thanh, va danh
chuc va » thuc va, thuc vat
ve phat » va phat, te phat, de phat
mai hoi » dai hoi, lai hoi, mai doi
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: so sach thu bang ((mai hoi) OR (mai khoi)). hieu ((ve phat) or (vi pham)) chuc va hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu bang ((mai hoi) OR (mai khoi)). hieu ((ve phat) OR (vi pham)) chuc va hanh dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thu bang ((mai hoi) OR (mai khoi)). hieu ((ve phat) or (vi pham)) chuc va hanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: so sach thu bang ((mai hoi) OR (mai khoi)). hieu ((ve phat) or (vi pham)) chuc va hanh dai cua te*.