Perhaps you should try some spelling variations:
thanh than » thanh thanh, thanh thang, thanh toan
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
than cua » nhan cua, thai cua, ban cua
cua tre » cua te, cuu tre, cua triet
cao duc » dao duc, cao suc, giao duc
tang xa » trang xa, tang ma, tang ha
lang xa » lang ha, dang xay, lang van
xac ky » cac ky, sac ky, bac ky
su xac » pu xac, su cac

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

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