Perhaps you should try some spelling variations:
toan thanh » tran thanh, hoan thanh, toan thang
cua quoc » cua nuoc, cua thuoc
thanh ve » hanh ve, thanh va, thanh vien
duc toan » duc tan, duc ton, duc hoan
mai khoi » mai khoa, tai khoa, cac khoi
thu sach » thuat sach, thuoc sach, thu hoach
mai hoi » dai hoi, lai hoi, mai doi
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
tu sach » su sach, te sach, tu cach
va cao » va cac, va co, va dao
y nang » ky nang, ly nang, v nang
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) y nang ((mai hoi) or (mai khoi)). hieu va cao duc toan thanh ve cua quoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang ((mai hoi) OR (mai khoi)). hieu va cao duc toan thanh ve cua quoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang ((mai hoi) or (mai khoi)). hieu va cao duc toan thanh ve cua quoc*.