Perhaps you should try some spelling variations:
thanh vang » thanh van, thanh hang, thanh hoang
ban thanh » ban hanh, ban hang
nam thuoc » nam thuc, nam thu, nha thuoc
hieu van » hieu va, thien van, lieu va
vang cua » mang cua, hang cua, tang cua
cua tre » cua te, cuu tre, cua triet
lam duc » lam duoc, pham duc, nam duoc
lang ha » long ha
lang xa » dang xay, lang van
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((lang xa) or (lang ha)) hoi. hieu van ((lam duc) or (nam thuoc)) ban thanh vang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((lang xa) OR (lang ha)) hoi. hieu van ((lam duc) OR (nam thuoc)) ban thanh vang cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((lang xa) or (lang ha)) hoi. hieu van ((lam duc) or (nam thuoc)) ban thanh vang cua tre*.