Perhaps you should try some spelling variations:
van thanh » ban thanh
chua tre » chua tri, cua tre, chua trieu
cham xuc » cam xuc, chat xuc, cham soc
vua chua » sua chua, cua chua, tua chua
dong hoc » dong luc
van tuan » van quan, van ban, anh tuan
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham

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 hoc) or (dong co)) hoi. hieu tu cham xuc ((van thanh) or (van tuan)) vua chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((dong hoc) OR (dong co)) hoi. hieu tu cham xuc ((van thanh) OR (van tuan)) vua chua tre.
• Adding a wildcard symbol may retrieve word variants: so sach ky ((dong hoc) or (dong co)) hoi. hieu tu cham xuc ((van thanh) or (van tuan)) vua chua tre*.