Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
van tham » van tuan, van chat, van tai
cao hoc » co hoc, cho hoc, chat hoc
dan lai » dan loai, dan lap, dan lat
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang cao hoc. thi ((van tham) or (van thanh)) xuc va dan lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang cao hoc. thi ((van tham) OR (van thanh)) xuc va dan lai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang cao hoc. thi ((van tham) or (van thanh)) xuc va dan lai cua tre*.