Perhaps you should try some spelling variations:
thanh hoa » thanh pho
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
cao duc » cao suc, giao duc, tao duoc
hoa cuu » hoa huu, hoa cua, ho cuu
dao duc » giao duc, tao duoc
cuu tre » cua tre, cau tren, cau treo
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
nang xa » lang xa, nang ma, mang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky ((nang xa) or (nang x)) hoi. hieu va ((cao duc) OR (dao duc)) va thanh hoa cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((nang xa) OR (nang x)) hoi. hieu va ((cao duc) OR (dao duc)) va thanh hoa cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((nang xa) or (nang x)) hoi. hieu va ((cao duc) OR (dao duc)) va thanh hoa cuu tre*".