Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
nam thuoc » nam thuc, nam thu, nha thuoc
hieu van » hieu va, thien van, lieu va
van anh » tuan anh, van minh
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
nam tu » nam thu, nam thuc
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang x hoi. hieu van ((nam thuoc) or (nam tu)) ((van anh) or (van thanh)) doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang x hoi. hieu van ((nam thuoc) OR (nam tu)) ((van anh) OR (van thanh)) doi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang x hoi. hieu van ((nam thuoc) or (nam tu)) ((van anh) or (van thanh)) doi cua tre*.