Perhaps you should try some spelling variations:
thanh hoi » thanh hoai, thanh hoa, thanh hai
ban thanh » ban hanh, ban hang
cham qua » pham quan, cham giua, cau qua
hoi cuu » hoi chu, hoi cua, ho cuu
qua ban » cua ban, qua quan
va cham » va chat, va tham
hieu va » lieu va, hieu qua
dai moi » doi moi, dai hoi
sach ty » sach y, sach thu, xach tay
mai hoi » mai khoi, dai hoi, lai hoi
sach tu » sach thu, cach tu, sach uu
cuu tre » cua tre, cau tren, cau treo

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 ty) OR (sach tu)) nang ((mai hoi) or (dai moi)). hieu va cham qua ban thanh hoi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) nang ((mai hoi) OR (dai moi)). hieu va cham qua ban thanh hoi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach tu)) nang ((mai hoi) or (dai moi)). hieu va cham qua ban thanh hoi cuu tre*".