Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
dong hoa » dong hoc, dong co
thanh va » thanh van, hanh va, thanh ha
chua tre » cua tre, chua trieu, cho tre
chua tri » chu tri, chua trieu, chua tivi
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky dong » ly dong, ky dang, ky cong
hoa doi » hoa dai, hoc doi, xoa doi
hieu vi » hieu voi, hieu va, hieu ve
duc van » duc va, duc tan, duc manh
pham » phan

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 ky dong hoa doi. hieu vi pham duc van thanh va ((chua tre) or (chua tri))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dong hoa doi. hieu vi pham duc van thanh va ((chua tre) OR (chua tri)).
• Adding a wildcard symbol may retrieve word variants: so sach ky dong hoa doi. hieu vi pham duc van thanh va ((chua tre) or (chua tri))*.